It takes about 1.5 seconds for the ball to hit the ground.
How to calculate the time for ball to hit the ground?To find how long it takes for the ball to hit the ground, we need to find the value of x when h(x) = 0, since the height of the ball is 0 when it hits the ground. We can set -16x²+36 = 0 and solve for x:
-16x²+ 36 = 0
Dividing both sides by -16:
x² - 2.25 = 0
Adding 2.25 to both sides:
x²= 2.25
Taking the square root of both sides (we can ignore the negative root since time cannot be negative):
x = √(2.25) ≈ 1.5
Therefore, it takes about 1.5 seconds for the ball to hit the ground.
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Given l||m||n, find the value of x
Answer:
x = 13
Step-by-step explanation:
We Know
(5x - 6) + (8x + 17) must equal 180°
Find the value of x.
Let's solve
5x - 6 + 8x + 17 = 180
13x + 11 = 180
13x = 169
x = 13
So, the value of x is 13.
X= 140×15²
write X as a product of powers of its prime factors
Answer:
X = 2² * 3² * 5³ * 7.
Step-by-step explanation:
140 = 2*2*5*7
15^2 = 3*5*3*5
So X = 2² * 3² * 5³ * 7
To find the prime factorization of X, we first need to simplify the expression.
140 × 15² = 140 × 225Now, we can factor 140 and 225 into their prime factors:
140 = 2² × 5 × 7225 = 3² × 5²So,
X = 140 × 225= (2² × 5 × 7) × (3² × 5²)We can now use the distributive property to multiply these factors together:
X = 2² × 3² × 5³ × 7Therefore, the prime factorization of X is:
Therefore, the prime factorization of X is:X = 2² × 3² × 5³ × 71. What are the current health issues and concerns in your community?
2. If you are a health worker in your community,what health issues and concerns do you think should be addressed immediately?why?
3. What will the world be like if health issues and concerns are not properly addressed by people around the world?
HELPPPPP PO
Infectious diseases, chronic conditions, mental health, healthcare access, health disparities. Vaccination campaigns, disease prevention, healthcare access, mental health support, social determinants. Increased disease burden, higher costs, reduced quality of life, higher mortality, strained healthcare systems, hindered socio-economic development.
What are the current health issues and concerns in your community? The current health issues and concerns in the community include a range of factors such as infectious diseases, chronic conditions, mental health challenges, healthcare access and affordability, health disparities, and the impact of lifestyle choices on overall well-being. As a health worker in the community, immediate attention should be given to addressing issues such as promoting vaccination campaigns, disease prevention and control measures, improving healthcare access and affordability, advocating for mental health support and awareness, and addressing social determinants of health. If health issues and concerns are not properly addressed globally, the consequences could be severe. There would likely be increased prevalence of diseases, higher healthcare costs, reduced quality of life, higher mortality rates, and widening health inequalities.Learn more about mental health support
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A model airplane flew the distance of 330 feet in 15 seconds. Select ALL the unit rates that are equivalent to the speed of the model airplane.
All of the unit rates that are equivalent to the speed of the model airplane are 22 feet per second, 1320 feet per minute, and 0.25 miles per minute.
To calculate the speed of the model airplane, we need to use the formula:
Speed = Distance / Time
Given that the distance covered by the model airplane is 330 feet, and the time taken is 15 seconds, we can substitute these values in the above formula to get:
Speed = 330 feet / 15 seconds
Simplifying this, we get:
Speed = 22 feet per second
To convert this unit rate to other equivalent unit rates, we need to use conversion factors. For example, to convert feet per second to feet per minute, we can multiply the unit rate by 60 (since there are 60 seconds in a minute):
22 feet per second x 60 seconds per minute = 1320 feet per minute
Similarly, to convert feet per minute to miles per minute, we can use the conversion factor 1 mile = 5280 feet:
1320 feet per minute / 5280 feet per mile = 0.25 miles per minute
Therefore, all of the unit rates that are equivalent to the speed of the model airplane are 22 feet per second, 1320 feet per minute, and 0.25 miles per minute.
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A savings account balance is compounded annually. if the interest rate is 2% per year and the current balance is $1430.00 what will the balance be 8 years from now
Answer:
A = P(1 + r/n)^(nt)
Where:
A = the future balance
P = the present balance ($1430.00)
r = the annual interest rate (2% or 0.02)
n = the number of times the interest is compounded per year (since it's compounded annually, n = 1)
t = the number of years (8 years in this case)
Plugging in the values into the formula:
A = 1430(1 + 0.02/1)^(1*8)
Simplifying the equation:
A = 1430(1.02)^8
Using a calculator or performing the calculations manually:
A ≈ 1430(1.171661)
A ≈ 1674.02
the balance after 8 years will be approximately $1674.02.
determine whether the function f(x) = a^x-a^(-x)+sinx is even or odd.
To determine whether the function f(x) = a^x-a^(-x)+sinx is even or odd, we need to check if it satisfies the properties of even and odd functions.
An even function is a function that satisfies the property f(x) = f(-x) for all x in the domain of the function. This means that if we reflect the graph of the function across the y-axis, we get the same graph.
An odd function is a function that satisfies the property f(x) = -f(-x) for all x in the domain of the function. This means that if we reflect the graph of the function across the origin (both x and y-axis), we get the same graph.
Let's start by checking whether f(x) is even:
f(-x) = a^(-x)-a^(x)+sin(-x) (since sin(-x) = -sin(x))
= -a^x+a^(-x)-sin(x)
Comparing f(-x) with f(x), we can see that f(-x) = -f(x) only when sin(x) = 0.
This means that f(x) is an even function only when sin(x) = 0, which occurs when x = nπ (where n is an integer).
Now, let's check whether f(x) is odd:
f(-x) = a^(-x)-a^(x)+sin(-x) (since sin(-x) = -sin(x))
= -a^x+a^(-x)-sin(x)
Comparing f(-x) with -f(x), we can see that f(-x) = -f(x) only when a^x = -a^x, which is not possible for any real value of a.
Therefore, f(x) is neither an even nor an odd function.
To determine whether the function f(x) = a^x - a^(-x) + sin(x) is even or odd, we can evaluate f(-x) and compare it to f(x).
An even function satisfies the condition f(-x) = f(x), while an odd function satisfies the condition f(-x) = -f(x).
Let's evaluate f(-x):
f(-x) = a^(-x) - a^(-(-x)) + sin(-x)
f(-x) = a^(-x) - a^x - sin(x)
Now, let's compare f(-x) to f(x):
f(-x) ≠ f(x) because f(x) = a^x - a^(-x) + sin(x)
f(-x) ≠ -f(x) because -f(x) = -a^x + a^(-x) - sin(x)
Since f(-x) is neither equal to f(x) nor -f(x), the function f(x) = a^x - a^(-x) + sin(x) is neither even nor odd.
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Calculate the first eight terms of the sequence of partial sums correct to four decimal places. sin(n) n = 1 n So 1 N 3 4 5 ILOILO 6 7 00 Does it appear that the series is convergent or divergent? convergent O divergent
we have the first eight terms, let's analyze the sequence. There doesn't appear to be a clear pattern or convergence towards a single value. The values are fluctuating, suggesting that the series may be divergent.
To find the first eight terms of the sequence of partial sums for the series sin(n), we will calculate the sum of the series for each term up to n=8, and then determine whether the series appears to be convergent or divergent.
1. sin(1)
2. sin(1) + sin(2)
3. sin(1) + sin(2) + sin(3)
4. sin(1) + sin(2) + sin(3) + sin(4)
5. sin(1) + sin(2) + sin(3) + sin(4) + sin(5)
6. sin(1) + sin(2) + sin(3) + sin(4) + sin(5) + sin(6)
7. sin(1) + sin(2) + sin(3) + sin(4) + sin(5) + sin(6) + sin(7)
8. sin(1) + sin(2) + sin(3) + sin(4) + sin(5) + sin(6) + sin(7) + sin(8)
Now, let's calculate these sums up to four decimal places:
1. 0.8415
2. 0.8415 + 0.9093 = 1.7508
3. 1.7508 + 0.1411 = 1.8919
4. 1.8919 - 0.7568 = 1.1351
5. 1.1351 - 0.9589 = 0.1762
6. 0.1762 - 0.2794 = -0.1032
7. -0.1032 + 0.6569 = 0.5537
8. 0.5537 + 0.9894 = 1.5431
Now that we have the first eight terms, let's analyze the sequence. There doesn't appear to be a clear pattern or convergence towards a single value. The values are fluctuating, suggesting that the series may be divergent.
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How much more popcorn does the bigger box hold than the smaller box?
\text{cm}^3cm 3
start text, c, m, end text, cubed
\text{Amanda's popcorn container:}Amanda’s popcorn container:start text, A, m, a, n, d, a, apostrophe, s, space, p, o, p, c, o, r, n, space, c, o, n, t, a, i, n, e, r, colon, end text
\text{Mary's popcorn container:}Mary’s popcorn container:start text, M, a, r, y, apostrophe, s, space, p, o, p, c, o, r, n, space, c, o, n, t, a, i, n, e, r, colon, end text
The amount of popcorn the bigger box holds than the smaller box depends on the dimensions of the two containers, so it cannot be determined without additional information.
The difference in the amount of popcorn the two containers hold depends on the volume of each container. Let's assume the volume of Amanda's popcorn container is V1 and the volume of Mary's popcorn container is V2.
If we know the dimensions of both containers, we can calculate their volumes using the formula V = l × w × h, where l is the length, w is the width, and h is the height of the container. Then, we can find the difference in the volumes of the two containers by subtracting V1 from V2.
However, the question does not provide any information about the dimensions of the two containers, so we cannot determine the difference in their volumes. Therefore, the main answer is that the amount of popcorn the bigger box holds than the smaller box cannot be determined without additional information.
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Solve for X
X^2 + x - 6 = 0
Answer: There are two solutions to X.. x = -3 and x = 2
Step-by-step explanation:
In this case, a = 1, b = 1, and c = -6, so we have:
x = (-1 ± sqrt(1^2 - 4(1)(-6))) / 2(1)
x = (-1 ± sqrt(1 + 24)) / 2
x = (-1 ± sqrt(25)) / 2
The two solutions are x = (-1 + 5) / 2 = 2 and x = (-1 - 5) / 2 = -3. Therefore, the solutions to the equation X^2 + x - 6 = 0 are x = 2 and x = -3.
In a survey conducted by a retail store, 58% of the sample respondents said they prefer to shop at places with loyalty cards.
96
If the margin of error is 3. 4%, the expected population proportion that prefers to shop at places with loyalty cards is between
and
%.
The expected population proportion, with 95% confidence, that prefers to shop at places with loyalty cards is between 54.6% and 61.4%.
Based on the survey results, we know that 58% of the sample respondents prefer to shop at places with loyalty cards. If the margin of error is 3.4%, we can calculate the expected range of the population proportion as follows:
Upper bound: 58% + 3.4% = 61.4%
Lower bound: 58% - 3.4% = 54.6%
Therefore, we can say with 95% confidence that the expected population proportion that prefers to shop at places with loyalty cards is between 54.6% and 61.4%.
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Which of the following quadratics would NOT have zeros that are 5 and -7?
(1) y= (x + 12-36
(3) y = x2 + 2x - 35
(2) y = (× + 5)(x - 7)
(4) y = 2(× + 7)(× - 5)
The quadratics that would not have 5 and -7 as zeros are (1) and (3)
Identifying the quadratics that would not have 5 and -7 as zeros?From the question, we have the following parameters that can be used in our computation:
Zeros: 5 and -7
This means that
x = 5 and x = -7
Rewrite as
x - 5 = 0 and x + 7 = 0
Multiply both equation
This gives
(x - 5)(x + 7) = 0
Rewrite as
f(x) = (x - 5)(x + 7)
When expanded, we have
f(x) = x² + 2x - 35
So, we have
(2) f(x) = x² + 2x - 35
(4) f(x) = 2(x + 7)(x - 5)
Hence, the quadratics that would not have 5 and -7 as zeros are (1) and (3)
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Rectangular prism
Your cousin is building a sandbox for his daughter.
How much sand will he need to fill the box? Explain.
How much paint will he need to paint all six surfaces of the sandbox? Explain.
and dont forget to explain
The formula to calculate surface area is 2(Length × Width) + 2(Length × Height) + 2(Width × Height) and the length, width, and height of the sandbox is required to calculate rectangular area.
To determine how much sand your cousin will need to fill the rectangular prism-shaped sandbox, we first need to calculate its volume. To do this, we need the dimensions of the sandbox (length, width, and height). The formula for the volume of a rectangular prism is:
Volume = Length × Width × Height
Once we have the volume, we can determine the amount of sand needed to fill the sandbox in cubic units.
To find out how much paint is needed to paint all six surfaces of the sandbox, we need to calculate its surface area. The formula for the surface area of a rectangular prism is:
Surface Area = 2(Length × Width) + 2(Length × Height) + 2(Width × Height)
Once we have the surface area, we can determine the amount of paint required, usually measured in square units. Note that the amount of paint needed also depends on the coverage rate of the paint, which is typically listed on the paint container.
Please provide the dimensions of the sandbox (length, width, and height) so I can provide specific calculations for the sand and paint required.
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1) Government funding: The following table presents the budget
(in millions) for selected organizations that received U. S
government funding for arts and culture in both 2006 and 2012
Organization
2006 2012
Corporation for Public Broadcasting 460 445
Institute of Museum and Library Services 247 237
National Endowment for the Humanities 142 148
National Endowment for the Arts
124 148
National Gallery of Art
951 147
Commission of Fine Arts
2 3
Advisory Council on Historic Preservation 5 6
a) Compute the correlation coefficient.
The least-squares regression line for predicting the 2016 budget from the 2006 budget is y = 18.18 + 0.9365x, their budgets to differ in 2016 is 9.365 million and the budget for organization is 111.83 million.
In a regression graph, the regression line closest to the data points is shown. By replacing alternative values of x in the regression equation, this statistical technique can assist analyse the behaviour of a dependent variable y when the independent variable x changes.
The corporation can identify the optimal asset price in relation to the cost of capital by using regression. It is used in the stock market to calculate the impact of stock price movements on the price of underlying commodities.
Regression analysis may be used in marketing to understand how pricing fluctuations affect the rise or reduction in products sales. It is particularly successful in forecasting future sales by correlating market factors, weather forecasts, economic situations, and prior sales.
a) Here we find the least square regression line for predicting the 2016 budget :
Regression line y = a+bx
b = [tex]\frac{n(Exy)-(Ex*Ey)}{n(Ex)^r-(Ey)^r}[/tex]
= [tex]\frac{2216256 - 1219050}{2220421-1155625}[/tex]
= [tex]\frac{997206}{1064796}[/tex]
= 0.9365
a= y-bx
= [tex]\frac{Ey}{n} -b\frac{Ex}{n}[/tex]
162 - (0.9635 x 153.5714286)
= 162 - 143.819
= 18.18
y = 18.18 + 0.9365x
b) For 10 million change in 2006, there will be
= 10 x 0.9365 = 9.365 million change in 2016
c) If x = 100,
y = 18.18 + 0.9365(100) = 111.83 million.
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Complete question:
Organization 2006 2016
Corporation for Public Broadcasting 460 445
Institute of Museum and Library Services 247 237
National Endowment for the Humanities 142 148
National Endowment for the Arts 124 148
National Gallery of Art 95 147
Commission of Fine Arts 2 3
Advisory Council on Historic Preservation 5 6
Source: National Endowment for the Arts
a. Compute the least-squares regression line for predicting the 2016 budget from the 2006 budget.
b. If two institutions have budgets that differ by 10 million dollars in 2006, by how much would you predict their budgets to differ in 2016?
c.Predict the 2016 budget for an organization whose 2006 budget was 100 million dollars.
For what value of x is the figure a rhombus?
The value of x is -4.
We have,
(3x + 25) and (6x - 2) makes one angle.
So,
(9x + 23) is the angle.
Now,
It is bisected in two angles.
So,
9x + 23 = 1/2 x (6x - 2)
9x + 23 = 3x - 1
9x - 3x = -1 - 23
6x = -24
x = -4
Thus,
The value of x is -4.
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In ΔSTU, t = 3. 4 cm, u = 6. 9 cm and ∠S=21°. Find the area of ΔSTU, to the nearest 10th of a square centimeter.
4.20 cm² is the area of the triangle STU to the nearest 10th of a square centimeter.
Given, t = 3.4 cm, u = 6.9 cm and ∠S = 21°
We know that the formula for the area of the triangle = 1/2 * t*u *sin(S)
Substituting the values
Area = 1/2 × 3.4 × 6.9 × sin(21°)
Area = 11.73 × sin(21°)
Area = 11.73 × 0.3583
Area = 4.2016
Rounding to the nearest 10th of a square centimeter .
Area = 4.20 cm²
Hence, 4.20 cm² is the area of the triangle STU to the nearest 10th of a square centimeter.
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I need help with these questions pls
Volumes of the cylinder are given by:
(A) (1) Volume = 2486.88 cubic in.
(2) Volume = 108518.4 cubic ft.
(3) Volume = 47608.68 cubic yd.
(B) (4) Volume = 508.68 cubic ft.
(5) Volume = 8490.56 cubic yd.
(6) Volume = 43407.36 cubic in.
(7) Volume = 9420 cubic ft.
(8) Volume of cylindrical flower vase = 1105.28 cubic in.
Surface Area of the Cylinder are given by:
(1) Surface Area = 113.04 square in.
(2) Surface Area = 1444.4 square ft.
(3) Surface Area = 678.24 square yd.
(4) Surface Area = 1130.4 square yd.
(5) Surface Area = 602.88 square in.
(6) Surface Area = 1055.04 square ft.
(7) Surface Area = 1570 square ft.
(8) Surface Area = 791.28 square yd.
(9) Surface Area = 326.56 square in.
We know that the volume of a cylinder with radius 'r' and height 'h' is given by,
V = 2πr²h
(A) (1) From the figure, radius = 6 in and height = 11 in.
So the volume = 2π(6)²*11 = 2486.88 cubic in.
(2) Radius = 24 ft. and height = 30 ft.
Hence, the volume of cylinder = 2π(24)²*30 = 108518.4 cubic ft.
(3) Radius = 19 yd. and height = 21 yd.
Hence, the volume of cylinder = 2π(19)²*21 = 47608.68 cubic yd.
(B) (4) Radius = 3 ft. and height = 9 ft.
Hence, the volume of cylinder = 2π(3)²*9 = 508.68 cubic ft.
(5) Radius = 13 yd. and height = 8 yd.
Hence, the volume of cylinder = 2π(13)²*8 = 8490.56 cubic yd.
(6) Radius = 16 in. and height = 27 in.
Hence, the volume of cylinder = 2π(16)²*27 = 43407.36 cubic in.
(7) Radius = 10 ft. and height = 15 ft.
Hence, the volume of cylinder = 2π(10)²*15 = 9420 cubic ft.
(8) Cylindrical flower vase is 11 inch tall and radius of vase is 4 inches.
The volume of flower vase = 2π(4)²*11 = 1105.28 cubic in.
Now we know that the surface area of a Cylinder with radius 'r' and height 'h' is given by,
S = 2πrh + 2πr²
(1) Radius = 2 in. and Height = 7 in.
Hence the surface area = 2π*2*7 + 2π(2)² = 113.04 square in.
(2) Radius = 10 ft. and Height = 13 ft.
Hence the surface area = 2π*10*13 + 2π(10)² = 1444.4 square ft.
(3) Radius = 6 yd. and Height = 12 yd.
Hence the surface area = 2π*6*12 + 2π(6)² = 678.24 square yd.
(4) Radius = 9 yd. and Height = 11 yd.
Hence the surface area = 2π*9*11 + 2π*9² = 1130.4 square yd.
(5) Radius = 6 in. and Height = 10 in.
Hence the surface area = 2π*6*10 + 2π(6)² = 602.88 square in.
(6) Radius = 8 ft. and Height = 13 ft.
Hence the surface area = 2π*8*13 + 2π(8)² = 1055.04 square ft.
(7) Radius = 10 ft. and Height = 15 ft.
Hence the surface area = 2π*10*15 + 2π(10)² = 1570 square ft.
(8) Radius = 6 yd. and Height = 15 yd.
Hence the surface area = 2π*6*15 + 2π(6)² = 791.28 square yd.
(9) Radius = 4 in. and Height = 9 in.
Hence the surface area = 2π*4*9 + 2π(4)² = 326.56 square in.
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3) Graph polygon G(-3,-2) R(-4,4) E(0,1) A(1, -2) T(-1, -3) and it’s image G’R’E’A’T’=R (GREAT)
A graph of polygon GREAT and its image after a counterclockwise rotation of 90° around the origin is shown in the image attached below.
What is a rotation?In Mathematics and Geometry, the rotation of a point 90° about the center (origin) in a counterclockwise (anticlockwise) direction would produce a point that has these coordinates (-y, x).
By applying a rotation of 90° counterclockwise around the origin to vertices W, the coordinates of the vertices of the image ΔA'B'C' are as follows:
(x, y) → (-y, x)
Ordered pair G = (-3, -2) → Ordered pair G' = (2, -3)
Ordered pair R = (-4, 4) → Ordered pair R' = (-4, -4)
Ordered pair E = (0, 1) → Ordered pair E' = (-1, 0)
Ordered pair A = (1, -2) → Ordered pair A' = (2, 1)
Ordered pair T = (-1, -3) → Ordered pair T' = (3, -1)
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Bailey buys a car for $25,000. The car depreciates in value 18% per year. How much will the car be worth after 3 years? Round your answer to the nearest whole dollar amount.
Gavin has $650 to invest into two different savings accounts.
He will deposit 400$ into Account A which earns 3. 5% annual simple interest
He will also deposit 250$ into Account B which earns 3. 25% annual compound interest
Gavin will not make any additional deposits or withdraws. Which amount is closest to the total balance (Principle and interest) of both accounts at the end on two years?
A 672. 13
B 695. 00
C 694. 25
D 694. 51
The closest amount to the total balance is option B, 695.00.
How much interest will Account B earn in 2 years?For Account A, the interest earned after 2 years is:
Interest = Principal * Rate * Time = 400 * 0.035 * 2 = 28
So the total balance in Account A after 2 years is:
Total A = Principal + Interest = 400 + 28 = 428
For Account B, the interest earned after 2 years is:
Interest = Principal * (1 + Rate/100)^Time - Principal = 250 * (1 + 3.25/100)^2 - 250 = 25.95
The total balance in Account B after 2 years is:
Total B = Principal + Interest = 250 + 25.95 = 275.95
The total balance in both accounts after 2 years is:
Total Balance = Total A + Total B = 428 + 275.95 = 703.95
The closest amount to the total balance is option B, 695.00.
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Let z be a random variable with a standard normal distribution. Find the indicated probability. (Enter a number. Round your answer to four decimal places. )
P(z ≥ 1. 41) =
If you let z be a random variable with a standard normal distribution, the indicated probability is 0.0793. So, the probability P(z ≥ 1.41) = 0.0793
To find the probability P(z ≥ 1.41) for a standard normal distribution, you can use a Z-table or calculator to find the area to the right of z = 1.41.
Using a Z-table or calculator, you will find the value of P(z ≥ 1.41) is approximately 0.0793. So, the probability P(z ≥ 1.41) = 0.0793. Remember to round your answer to four decimal places.
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A model of a car is built with a scale of 1 inch: 4 feet. If the length of the model car is 2. 7 inches, then the length of the actual car is _____ft.
The length of the actual car is 10.8 feet.
How long is actual car?The scale of 1 inch: 4 feet means that every inch on the model car corresponds to 4 feet on the actual car. Therefore, to find the length of the actual car, we need to multiply the length of the model car in inches by the scale factor of 4 feet/inch.
Length of actual car = Length of model car x Scale factor
Length of actual car = 2.7 inches x 4 feet/inch
Length of actual car = 10.8 feet
Therefore, the length of the actual car is 10.8 feet.
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A glass prism on a chandelier is 93 millimeters long. A base of the prism is an equilateral triangle with side lengths of 7 millimeters and a height of about 6. 6 millimeters. What is the approximate surface area of the prism?
The approximate surface area of the glass prism is approximately 1986.66 square millimeters.
To find the surface area of the glass prism, we need to determine the area of each of its faces and then add them together. The prism consists of two congruent equilateral triangles and three rectangular faces.
The area of an equilateral triangle with side length s and height h is given by:
A = (√(3)/4) * s²
Using this formula, we can find the area of each of the two equilateral triangles in the prism:
A = (√(3)/4) * 7² ≈ 21.22 mm²
Next, we need to find the area of each of the three rectangular faces. The length of each rectangular face is equal to the side length of the equilateral triangle (7 mm), and the height is equal to the length of the prism (93 mm). Therefore, the area of each rectangular face is:
A = length x height = 7 mm x 93 mm = 651 mm²
To find the total surface area of the prism, we add the areas of the two equilateral triangles and the three rectangular faces:
Total surface area ≈ 2 x 21.22 mm² + 3 x 651 mm² ≈ 1986.66 mm²
Therefore, the approximate surface area of the glass prism is approximately 1986.66 square millimeters.
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What was the average amount of books read per student according to the histogram below?
The average amount of books read per student according to the histogram is given as follows:
1.27 books.
How to calculate the mean of a data-set?The mean of a data-set is given by the sum of all observations in the data-set divided by the number of observations, which is also called the cardinality of the data-set.
The histogram shows the number of times for each observation, hence:
7 students read zero books.9 students read one book.6 students read two books.4 students read three books.Hence the mean is calculated as follows:
M = (7 x 0 + 9 x 1 + 6 x 2 + 4 x 3)/(7 + 9 + 6 + 4) = 1.27 books.
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Cause then you'd only get one answer to study.
Now back to the
a collection of facts,
Numbers, measurements and things like that.
conclusion
estimate
data
A collection of information, such as numbers, measurements, or observations, is commonly referred to as data.
Data can be collected from a wide variety of sources, such as surveys, experiments, or observations, and can be analyzed to reveal patterns, trends, and relationships.
Data can be represented in many different ways, including tables, graphs, charts, or statistical summaries, and can be used to make informed decisions in a wide range of fields, including business, science, healthcare, and social sciences.
However, it is important to ensure that the data is accurate, reliable, and unbiased, and that appropriate statistical methods are used to analyze and interpret it.
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Full Question: What is a collection of information such as number measurement or observation called?
Josie had 12 beads on her necklace. Then she added b more beads. Write an expression that shows how many beads are on the necklace in all. please write a expression like b-12 or b+?
The expression that shows how many beads are on the necklace in all is:
b + 12.
What is expression?An expression in mathematics is a combination of numbers, variables, and/or operators that represents a mathematical relationship or quantity. It may contain constants, variables, coefficients, and mathematical operations such as addition, subtraction, multiplication, division, and exponentiation. Expressions are often used to describe or represent real-world situations, and can be simplified, evaluated, or manipulated using algebraic rules and properties.
In the given question,
To write an expression that shows how many beads are on Josie's necklace in all after adding b more beads:
Start with the initial number of beads on the necklace, which is 12.
To this, add the number of beads Josie added, which is b.
Combine the two terms to form the final expression: 12 + b.
Therefore, the expression that shows how many beads are on Josie's necklace in all after adding b more beads is 12 + b.
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Probability of a pair of dice landing on a 4 and on a 6
Answer:
1/3
Step-by-step explanation:
It would be 2 options out of 6 total which means 2/6. 2/6 reduces down to 1/3
Two circles, C1 and C2, intersect at point A and B. Passes through the center O of circle C2. The point P lies on circle C2 so that the line PAT is target to circle Ci and point A. Let ∠APB =.
The value of ∠APB = 180°. It is a straight line.
Given the information, we can deduce that the line passing through the center O of circle C2 and point A also passes through point B, as AB is the intersection of the two circles.
Now, consider the line segment AP. Since PAT is tangent to circle C1 at point A, we know that ∠APT = 90°. Additionally, since AB is a diameter of circle C1, we know that ∠ABP = 90°.
Using these angles, we can see that ∠APB is equal to the sum of ∠APT and ∠ABP. Therefore,
∠APB = ∠APT + ∠ABP = 90° + 90° = 180°.
So, we have shown that ∠APB is a straight line.
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Among college students who hold part-time jobs during the school
year, the distribution of the time spent working per week is approximately normally distributed with a
mean of 20. 20 hours and a standard deviation of 2. 6 hours. Find the probability that the average time
spent working per week for 18 randomly selected college students who hold part-time jobs during the
school year is
a. Not within 1 hour of the population mean
b. 20. 0 to 20. 5 hours
c. At least 22 hours
d. No more than 21 hours
The z scοre is negative the actual probability would be
1-0.7995 = 0.2005
What is the probability?
A number that expresses hοw likely it is that an event will occur is called the probability of οccurrence. It is written as a number from 0 to 1, or frοm 0% to 100%, in percentage notation. The probability of an event occurring increases with probability.
here,
mean = 20.20
standard deviatiοn = 2.60
we knοw that,
Z scοre = (X-mean)/standard deviation
fοr X = 18:
Z scοre = (18-20.20)/2.6 = -0.8461
nοte that the z score is negative because the measured value is less than the mean value.
fοr Z score 0.8461 probability is 0.7995
and since the z scοre is negative the actual probability would be
1-0.7995 = 0.2005
a. For nοt within 1 hour of the population mean
We apply the formula here and we get the value οf P.
P(19.20>x>21.20) = P(19.20-20.20/2.60√18) > X-μ/σ√n >21.20-20.20/2.60√18
P(19.20>x>21.20) = P(-1.63>z>1.63)
Now, we find the value οf z.
P(19.20>x>21.20) = P(z>1.63) + P(z<-1.63)
P(19.20>x>21.20) = 0.0516 + 0.0516
P(19.20>x>21.20) = 0.1032
b. Fοr 20. 0 to 20. 5 hours
P(20<x<20.5) = P(20-20.20/2.60√18) < X-μ/σ√n<20.50-20.20/2.60√18
P(20<x<20.5) = P(-0.33<z<0.49)
Nοw, we find the value of the z-score and we get
P(20<x<20.5) = P(z<0.49) - P(z<-0.33)
P(20<x<20.5) = 0.6879 - 0.2707
P(20<x<20.5) = 0.3172
c. Fοr at least 22 hours
We apply the t-test fοrmula here and we get
P(x≥22) = P(X-μ/σ√n≥22-20.20/2.60√18)
Nοw, we find the value of z.
P(x≥22) = P(z≥2.94)
P(x≥22) = 0.0016
d. Fοr not more than 21 hours.
P(x<21) = P(X-μ/σ√n<21-20.20/2.60√18)
We find here the value οf P for x<21 and we get
P(x<21) = P(z<1.31)
Now, we find the value οf the z- score.
P(x<21) = 0.9049
Hence, a. 0.1032
b. 0.3172
c. 0.0016
d. 0.9049
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Complete question is,
Among college students who hold part-time jobs during the school year, the distribution of the time spent working per week is approximately normally distributed with a mean of 20.20 hours and a standard deviation of 2.60 hours. Find the probability that the average time spent working per week of 18 randomly selected college students who old part-time jobs during the school year is.
Can anyone tell me the coordinates of this graph?
There are 39 students in a class 22 offer maths,14 offer physics,and 16 offer biology if 5 offer both biology and math 7 offer at least one of the subject where every student offer at least one of the subjects. Find
Where every student offer at least one of the subjects, there are 4 students who offer all three subjects.
To find the number of students who offer only one subject, we can use the formula:
number of students offering only one subject = total number of students offering the subject - number of students offering both subjects
For math, there are 22 students offering math and 5 offering both math and biology, so the number of students offering math only is:
22 - 5 = 17
Similarly, for physics and biology, the numbers of students offering the subjects only are:
14 - 7 = 7 (physics)
16 - 5 = 11 (biology)
To find the number of students offering all three subjects, we can use the formula:
number of students offering all three subjects = total number of students offering at least one subject - number of students offering only one subject in each subject + number of students offering no subject
We know that there are 7 students offering at least one subject. To find the number of students offering no subject, we can subtract this from the total number of students:
39 - 7 = 32
Now we can plug in the numbers:
number of students offering all three subjects = 7 - 17 - 7 - 11 + 32
= 4
Therefore, there are 4 students who offer all three subjects.
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