Answers
(a) There are 0.1271 percent of poodles that weigh more than 7.9 kilograms. (b) The region to a left , z1 is 0.2389, and the proportion of pups with weights of no more than 7.4 kilos is 0.2852.
How much does a kilogram weigh?a. i. To determine how many times the revenue in 2017 was greater than the revenue in 2016, divide the revenue in 2017 by the revenue in 2016:
$164,900\div 138,200 = 1.1939$
Revenue in 2017 was 1.1939 times greater than revenue in 2016.
ii. To calculate the revenue in 2017 as a percentage of the revenue in 2016, divide the revenue in 2017 by the revenue in 2016 and multiply by 100:
$dfrac164,900138,200 multiplied by 100% = 119.39%$In 2017, revenue was 119.39% higher than in 2016.
b. i. To determine how many times the population of Huntersville was greater than the population of Wright's Park in 2015, divide the population of Huntersville by the population of Wright's Park:
(a) To find the proportion of poodles with weights over 7.9 kilograms, we need to find the area under the standard normal distribution curve to the right of z = (7.9 - 7) / 0.7 = 1.14. From the standard normal distribution table, the area to the right of z = 1.14 is 0.1271. Therefore, the proportion of poodles with weights over 7.9 kilograms is 0.1271.
(b) To find the proportion of poodles with weights of at most 7.4 kilograms, we need to find the area under the standard normal distribution curve to the left of z = (7.4 - 7) / 0.7 = -0.86. From the standard normal distribution table, the area to the left of z = -0.86 is 0.1949. Therefore, the proportion of poodles with weights of at most 7.4 kilograms is 0.1949.
(c) To find the proportion of poodles with weights between 6.5 and 7.8 kilograms inclusive, we need to find the area under the standard normal distribution curve between z = (6.5 - 7) / 0.7 = -0.714 and z = (7.8 - 7) / 0.7 = 1.14. From the standard normal distribution table, the area to the left of z = -0.714 is 0.2389 and the area to the right of z = 1.14 is 0.1271. Therefore, the proportion of poodles with weights between 6.5 and 7.8 kilograms inclusive is 1 - 0.2389 - 0.1271 = 0.634.
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Related Questions
Rewrite the following in scientific notation and calculate the answer in scientific notation. If necessary, convert your answer to scientific notation. 2,520,000/14,000
Answers
The given expression can be written in scientific notation as 1.8 x 10² To obtain this, we first divide 2,520,000 by 14,000 to get 180. Then, we express this as 1.8 x 10² by moving the decimal point two places to the left and adding an exponent of 2.
What is scientific notation?For expressing very big or very small numbers in scientific notation, the number is written as the product of a number between 1 and 10 and a power of 10
How do you convert a number to scientific notation?To convert a number to scientific notation, first express it in the form a x 10^b, where a is a number between 1 and 10, and b is an integer.
Then, move the decimal point in a to obtain a number between 1 and 10, and add an exponent to 10 that corresponds to the number of places you moved the decimal point.
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describe the key features que f the graph of the quadratic function f(x)=x^2-8-20
Answers
The graph is a parabola, with a vertex at (4,-4), an axis of symmetry at x = 4, x-intercepts at x = 10 and x = -2, and a y-intercept at (0,-20).
Define quadratic functionA quadratic function is a type of polynomial function of degree 2. It can be defined as a function in which the highest power of the independent variable x is 2.
The quadratic function f(x) = x² - 8x - 20 has a graph that is a parabola with a vertical axis of symmetry.
Vertex: The vertex of the parabola can be found using the formula x = -b/2a, where a and b are the coefficients of x² and x respectively.
In this case, a = 1 and b = -8, so the x-coordinate of the vertex is x = -(-8)/(2×1) = 4.
To find the y-coordinate of the vertex, substitute x = 4 into the equation: f(4) = 4² - 8(4) - 20 = -4. Therefore, the vertex is located at (4,-4).
Axis of symmetry: The axis of symmetry of the parabola is a vertical line passing through the vertex.
In this case, the axis of symmetry is the line x = 4.
Intercepts: To find the x-intercepts set y = 0 and solve for x: x² - 8x - 20 =0.
this quadratic equation can be factored as (x - 10)(x + 2) = 0
so the x-intercepts are x = 10 and x = -2.
To find the y-intercept, set x = 0 and evaluate f(0) = 0² - 8(0) - 20 = -20. Therefore, the y-intercept is (0,-20).
Image is attached below.
The graph is a upward-facing parabola, with a vertex at (4,-4), an axis of symmetry at x = 4, x-intercepts at x = 10 and x = -2, and a y-intercept at (0,-20).
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Please help, this was due yesterday!!!!!
Answers
Answer:
x =65°( being alternate angel)
Without using a calculator, fill in the blanks with two consecutive integers to complete the following inequality.
__ __
Answers
Answer:
[tex]13 < \sqrt{181} < 14[/tex].
Step-by-step explanation:
We have been given an inequality ___[tex]< \sqrt{181} <[/tex]___. We are asked to fill in the blank with two consecutive integers to complete the given inequality.
We know that square root of 181 is not an integer. We can see that 181 is greater than square root 169 and and square root of 196.
[tex]\sqrt{169} < \sqrt{181} < \sqrt{196}[/tex]
We know that [tex]\sqrt{169}=13[/tex] and [tex]\sqrt{196}=14[/tex].
Therefore, our required inequality would be [tex]13 < \sqrt{181} < 14[/tex]
Katya owns two cockatoos, an older white cockatoo and a younger Galah cockatoo. At present, the sum of the cockatoos' ages is 44 years. In n years, where n > 0, the white cockatoo's age will be four times the Galah cockatoo's age. If n is an integer, determine the possible present ages of each cockatoo.
Answers
The possible present ages of each cockatoo, given the sum of the cockatoos would be Galah cockatoo is currently 10 years old and the white cockatoo would be 34 years old
How to find the ages of the cockatoos?Let's use variables to represent the present ages of the two cockatoos. Let W be the present age of the white cockatoo and G be the present age of the Galah cockatoo. We're given that the sum of their ages is 44 years:
W + G = 44 (1)
In n years, the white cockatoo will be W + n years old, and the Galah cockatoo will be G + n years old:
W + n = 4(G + n) (2)
Since n > 0, 5G - 44 must be positive. We can try different values of G to find possible integer values for n.
For G = 8:
44 - 5(8) = 4
4 = -3n
n is not an integer.
For G = 10:
44 - 5(10) = -6
-6 = -3n
n = 2
So one possibility is that the Galah cockatoo is currently 10 years old. In this case, the white cockatoo would be 34 years old (since W + G = 44).
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i need the answers please
Answers
Answer:
(7) AB is a tangent , (8) AB is not a tangent
Step-by-step explanation:
the angle between a tangent and the radius is 90°
if AB is a tangent then Δ ABC is right with hypotenuse AC
using Pythagoras' identity
the square on the hypotenuse of a right triangle is equal to the sum of the squares on the other 2 sides.
if AC² = AB² + BC² , then AB is a tangent to the circle
(7)
AC² = 34² = 1156
AB² + BC² = 30² + 16² = 900 + 256 = 1156
since AC² = AB² + BC² , then AB is a tangent to the circle
(8)
AC² = 28² = 784
AB² + BC² = 21² + 20² = 441 + 400 = 841
since AC² ≠ AB² + BC² , then AB is not a tangent to the circle
PLEASE HELP LATE HOMEWORK
Answers
The number of students who have both a cell phone and a tablet is 13. This corresponds to the intersection of the "Has Cell Phone" and "Has Tablet" sets.
What is meant by intersection?
In mathematics, the intersection of two sets A and B is a new set that contains all the elements that are common to both sets. In symbols, the intersection of A and B is denoted by A ∩ B, and it is defined as:
A ∩ B = {x : x ∈ A and x ∈ B}
Let A represent the set of students who have a cell phone, and B represent the set of students who have a tablet. The intersection of A and B, denoted by A ∩ B, represents the set of students who have both a cell phone and a tablet. Therefore, we want to find the cardinality (or size) of the set A ∩ B.
From the frequency table, we know that the total number of seventh graders surveyed is 100. We also know that there are 32 students who have a cell phone (i.e., |A| = 32) and 70 students who have a tablet (i.e., |B| = 70). We are given that 19 students who have a cell phone do not have a tablet, which means that there are 32 - 19 = 13 students who have both a cell phone and a tablet (i.e., |A ∩ B| = 13).
Therefore, the number of students who have both a cell phone and a tablet is 13. This corresponds to the intersection of the "Has Cell Phone" and "Has Tablet" sets.
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Two stores have a laptop computer for sale.
Part A: Store A is selling the laptop for
and has a discount coupon for
off. Calculate the amount of the discount at Store A.
Part B: Store B is selling the laptop for
and has a discount coupon for
off. Calculate the amount of the discount at Store B.
Part C: Which store should you purchase the laptop from? Use details to support your answer.
Answers
Store A would be the better choice as the final price is lower than Store B even though the original price was also lower at Store B.
What is discount?
Discount means the amount which is deducted by sellers from the amount to be payable by buyers.
Part A:
Store A is selling the laptop for $900 and has a discount coupon for 15% off. To calculate the amount of the discount, we can multiply the original price by the discount percentage:
Discount amount = $900 x 15% = $135
Therefore, the amount of the discount at Store A is $135.
Part B:
Store B is selling the laptop for $950 and has a discount coupon for 10% off. To calculate the amount of the discount, we can multiply the original price by the discount percentage:
Discount amount = $950 x 10% = $95
Therefore, the amount of the discount at Store B is $95.
Part C:
At Store A, the final price would be:
Final price at Store A = $900 - $135 = $765
At Store B, the final price would be:
Final price at Store B = $950 - $95 = $855
Therefore, Store A would be the better choice as the final price is lower than Store B even though the original price was also lower at Store B.
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A bag holds 13 marbles. 6 are blue, 2 are green, and 5 are red.
Match the events on the left with probabilities on the right.
Answers
The probabilities of the events and their values are shown below
Matching the probabilities of the eventsThe total number of marbles in the bag is 13, with 6 blue, 2 green, and 5 red.
P(Blue or Green) represents the probability of selecting a blue or green marble on the first pick.
This is calculated as follows:
P(Blue or Green) = P(Blue) + P(Green)
= 6/13 + 2/13
= 61.5%
P(Blue and Green) represents the probability of selecting a blue marble and a green marble on two consecutive picks, with replacement.
Therefore:
P(Blue and Green) = P(Blue) * P(Green)
= (6/13) * (2/13)
= 7.1%
P(Blue and Green) represents the probability of selecting a blue marble and a green marble on two consecutive picks, without replacement.
Therefore:
P(Blue and Green) = P(Blue) * P(Green)
= (6/13) * (2/12)
= 7.7%
P(Blue) represents the probability of selecting a blue marble on the first pick.
This is simply the proportion of blue marbles in the bag:
P(Blue) = 46.2%
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100 pts answer fast and brainliest
Answers
Answer:
1 c
2 d
3 a
4 b
5 e
Step-by-step explanation:
scale factor > 1 => expansion
scale factor < 1 => contraction
scale factor = 1 => no change
scale factor is (-) => opposite site
Drag each expression to show whether it is equivalent to 36x+9 or 9(4x-1)
Answers
1. 36x+8- 3rd column;
2. (9·4x)+(9·1)=36x+9 - 1st column;
3. (3·12x)-(3·3)=36x+9 - 2nd column;
4. 9(4x+1)=36x+9 - 1st column;
5. 36x-9- 2nd column;
6. 4(9x+2)=36x+8 - 3rd column
Define equationIn mathematics, an equation is a statement that asserts the equality of two expressions, typically separated by an equals sign (=). Equations can contain one or more variables, which are quantities that can take on different values.
Start with expressions in blue boxes:
1st column) 36x+9;
2nd column) 9(4x-1)=36x-9;
3rd column) (4·9x)+(4·2)=36x+8.
You have 6 expressions. Consider all them:
1. 36x+8- 3rd column;
2. (9·4x)+(9·1)=36x+9 - 1st column;
3. (3·12x)-(3·3)=36x+9 - 2nd column;
4. 9(4x+1)=36x+9 - 1st column;
5. 36x-9- 2nd column;
6. 4(9x+2)=36x+8 - 3rd column
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The complete question is;
Drag each expression to show whether it is equivalent to 36x + 9, 9(4x – 1), or (4 • 9x) + (4 • 2).
PLSSS HELPPP QUICK
What is the product of the monomial x and the
trinomial 2x² -5x+1?
Answers
So, the product of the monomial x and the trinomial 2x² - 5x + 1 is:
x(2x² - 5x + 1) = 2x³ - 5x² + x
Therefore, the product of the monomial x and the trinomial 2x² - 5x + 1 is 2x³ - 5x² + x.
A house is advertised for sale. If the sale price
is $140,000. Calculate the mortgage of the deposit is 25% of the cash price
Answers
Answer: $105,000
Step-by-step explanation:
$140,000-25%deposit =$105,000
Dario walks from his house to a comic book store along the route shown. Distances in the coordinate plane are in units of miles. How many miles does Dario walk to reach the comic book store
Answers
The distance walked by Dario from to reach comic book store is 1.4 miles.
What is distance?Displacement and distance are two terms that, while they appear to imply the same thing, have quite different definitions and meanings. Displacement is the measurement of "how much space an item has covered while it has been in motion," whereas distance is the indication of "how much ground an object has covered during its motion." Let's examine the distinction between displacement and distance in this essay.
For the given route we have:
House to jewelry store:
0.2 - (-0.5) = 0.2 + 0.5 = 0.7 miles.
Jewelry store to bank:
0.6 - 0.2 = 0.4 miles.
Bank to comic book store:
-0.5 -(-0.8) = -0.5 + 0.8 = 0.3 miles.
House to comic book store:
0.7 + 0.4 + 0.3 = 1.4 miles.
Hence, the distance walked by Dario from to reach comic book store is 1.4 miles.
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The complete question is:
Triangle WXY with W(0, 1), X(-4, 4), Y(0, 2)
in y-axis
(x, y) ⇒ (x − 1, y — 4)
a) Reflection
b) Translation
Answers
(a)The transformed vertices would be:
W' = (1, -3)
X' = (-3, 0)
Y' = (1, -2)
(b)The transformed vertices would be:
W' = (-0, 1)
X' = (4, 4)
Y' = (-0, 2)
What is reflection ?a) Reflection: To reflect the triangle across the y-axis, we simply need to negate the x-coordinates of each vertex.
The transformed vertices would be:
W' = (-0, 1)
X' = (4, 4)
Y' = (-0, 2)
The reflected triangle would be W'X'Y'.
b) Translation: To translate the triangle by the vector (1, -4), we add (1, -4) to the coordinates of each vertex.
The transformed vertices would be:
W' = (1, -3)
X' = (-3, 0)
Y' = (1, -2)
The translated triangle would be W'X'Y'.
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your mom got 20 cupcakes in you got 1 plate how the 1 and 20
Answers
Answer:
Step-by-step explanation:
explain you question more i cant understand if i could i would help
The three-dimensional figure below is a cylinder with a hole in the shape of a rectangular prism going through the center of it. The radius is 10 yards. Find the volume of the solid in cubic yards, rounded to the nearest ten.
Answers
The volume of the solid with a hole in the shape of a rectangular prism passing through the center of a cylinder with a radius of 10 yards is approximately 1410 cubic yards, rounded to the nearest ten.
The cylinder with the hole can be viewed as the difference of two solids: the cylinder and the rectangular prism. The volume of the cylinder is given by the formula V_cyl = π[tex]r^2h[/tex], where r is the radius and h is the height.
The height of the cylinder is equal to the height of the rectangular prism that passes through its center. The height of the rectangular prism is given as 12 yards, which is also the diameter of the cylinder. Therefore, the height of the cylinder is h = 12/2 = 6 yards.
The volume of the cylinder is therefore V_cyl = π[tex](10)^2(6)[/tex] = 600π cubic yards.
The rectangular prism has a length of 20 yards, a width of 10 yards, and a height of 12 yards. Therefore, its volume is V_prism = 20 × 10 × 12 = 2400 cubic yards.
The volume of the solid with the hole is then:
V = V_cyl - V_prism = 600π - 2400 = 600(π - 4) ≈ 1412.2 cubic yards.
Therefore, the volume of the solid is approximately 1410 cubic yards.
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Helena sketches a circular backyard skating pond that fits into a square section of her yard. In her sketch, what is the area of the shaded region?
Answers
Answer:
The area of the shaded region equals 21.43 sq. units.
Step-by-step explanation:
Why do we use area?When calculating how much material is needed to cover a wooden table, how many tiles are needed to tile the floor, how much space is needed for a parking lot, how much paint is needed for the walls, etc., we employ the notion of area.
Given, A circle is circumscribed in the square,
Area of shaded region = area of square - area of circle
Area of square = Side²
= 10 × 10 = 100 sq. units,
Area of circle = Πr²
Radius = Diameter / 2
radius = 10 / 2 = 5 unitsArea of circle = Πr²
Radius = Diameter / 2
radius = 10 / 2 = 5 units
Area of circle = 22/7 × 5 × 5
= 78.57 sq. units
Area of shaded region = 100 - 78.57,
Area of shaded region = 21.43 sq. units
In a survey by the Pew Research Center, adult members of the Church of Jesus Christ of Latter-day Saints in the U.S. were asked how important religion is in their life. 558 adults said religion is “very important” in their lives, 79 adults said religion is “somewhat important” in their lives, 20 adults said religion is “not too important” in their lives, and 7 adults said religion is “not at all important” in their lives. Which of the following columns (A, B, C, D, or E) correctly shows the responses to this question as a probability model? (A) (B) (C) (D) (E) Very important 63.5% 84% 84% 12% 77% Somewhat important 22.5% 12% 14% 84% 21% Not too important 2% 3% 5% 1% 5% Not at all important 1% 1% 3% 3% 3%
Answers
The correct column is (A), which correctly represents the responses as probability.
Define probabilityProbability is a measure of the likelihood or chance that a particular event will occur. It is usually expressed as a number between 0 and 1, with 0 indicating that an event is impossible and 1 indicating that an event is certain.
The sum of all the responses is 558 + 79 + 20 + 7 = 664.
To represent the responses as a probability model, we need to divide each response by the total number of respondents, 664.
The correct column is (A), which correctly represents the responses as probabilities:
(A)Very important 558/664 = 0.841
Somewhat important 79/664 = 0.119
Not too important 20/664 = 0.030
Not at all important 7/664 = 0.011
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How to calculate Standard Error of the Y intercept and standard error of the slope, given the table below, without the SE coefficient given.
Answers
Answer:
Step-by-step explanation:
the stabdard error is given with the se coefficient snf the y slope
PLEASE HELP ASAP PLEASE!!
Answers
Answer: a/ c/ d and e
Step-by-step explanation:
Find the absolute extrema of the function on the closed interval.
y = 3 cos x, [0, 2π]
Answers
The absolute extrema for the given function occurred at the critical points for Interval [0, 2π] is 3.
Explain about the absolute extrema of function?The point wherein the minimum or maximum value of the function is reached is known as the absolute extremum (also global extremum) of the function in the given interval.
The absolute extremum, or point equivalent to the highest or least value in the entire function, is frequently the interval specified, which is the domain of the function.
The given function :
y = 3 cos x,
Differentiate the function with respect to 'x'.
y' = -3 sin x
Find the critical point , by y = 0
-3 sin x = 0
x = sin ⁻¹ (0)
Interval [0, 2π]
So, critical points are: x = 0,π, 2π
Now, evaluate function by putting the critical points;
y(0) = 3 cos 0 = 3
y(π) = 3 cos π = 0
y(2π) = 3 cos 2π = 3
Thus, absolute extrema for the given function occurred at the critical points 0 and 2π that is 3.
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HELP ME PLS I LITERATELY CANT
Answers
Let's start by finding out how many minutes Jonathan practices per day. Since there are 14 days in 2 weeks, we can divide the total practice time by 14 to get the average daily practice time:
658 minutes ÷ 14 days = 47 minutes per day
Now we can write a proportional equation in terms of d, the number of days Jonathan practices:
t = 47d
This equation tells us that Jonathan's total practice time (t) is proportional to the number of days (d) he practices, with a constant rate of 47 minutes per day. As he practices more days, his total practice time will increase in a linear fashion.
Malinda wants to rent a compact car for eight days. Ace Rental rents these cars for $48 per day or $312 per week. Compute the cost of each plan for her. Which plan is more economical?
Answers
a) The total cost for renting a compact car for eight days is as follows for each plan:
Daily rental = $384Weekly rental = $360.b) It is more economical to take the weekly rental plan than the daily rental plan.
How is the total cost determined?Each plan's total rental cost is determined using multiplication or addition.
For instance, the total cost for the daily plan is a product of the daily rental cost and the number of days the car is rented.
The total cost for the weekly plan is an addition operation since the car is rented for 7 days (weekly cost) and 1 day (daily cost).
Day Week
Rental cost per $48 $312
1 week = 7 days
Total rental cost for
8 days $384 ($48 x 8) $360 ($312 + $48)
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Find the value of z such that 0.5762
0.5762
of the area lies between −z
−
z
and z. Round your answer to two decimal places.
Answers
Answer:
z = 0.80
Step-by-step explanation:
You want the value of z such that p(-z < X < z) = 0.5762 for a normal distribution.
TailsThe area outside the region of interest will be split evenly between the two tails. That is, the lower tail will hold (1 -0.5762)/2 = 0.2119 of the area of the distribution. The required value of z will be the magnitude of the Inverse CDF function for this value.
Inverse CDFThe attached calculator shows the required value of z is about 0.80.
what is the length of tr?
Answers
Answer:
12
Step-by-step explanation:
Determine f(3) for f(x)
A. 9
B. 19
C. 22
D. 27
Answers
5 times 3 plus 4 is 19
19 is greater than or equal to 3
w/ solution please thanks
Answers
Answer:
x=-5, y=-2
Step-by-step explanation:
2x+4y=-18 (1)
5x-10y=-5 (2)
apply 5×(1)+2×(2)
10x+20y=-90 (3)
10x-20y=-10 (4)
by adding (3) and (4)
20x=-100
x=-5
put the value of x in (1)
we get 2×(-5)+4y=-18
⇒y=-2
After solving the given equations, the value of x and y are -5 and -2 respectively.
What are equations?A mathematical equation is a formula that uses the equals sign to represent the equality of two expressions.
A mathematical statement that has an "equal to" symbol between two expressions with equal values is called an equation.
As in 3x + 5 Equals 15, for instance.
Equations come in a variety of forms, including linear, quadratic, cubic, and others.
So, we have the equations:
2x+4y=-18 (1)
5x-10y=-5 (2)
Apply as follows: 5×(1)+2×(2)
10x+20y=-90 (3)
10x-20y=-10 (4)
After adding (3) and (4):
20x=-100
x=-5
Insert the value of x in (1) as follows:
We obtain: 2×(-5)+4y=-18
⇒y=-2
Therefore, after solving the given equations, the value of x and y are -5 and -2 respectively.
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Pat listed all the numbers that have 15 as a multiple. What’s the numbers in Pats list
Answers
Answer:
15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180, 195, 210, 225, 240, 255, 270, 285, 300, 315, 330, 345, 360, 375, 390, 405, 420, 435, 450, 465, 480, 495, 510, 525, 540, 555, 570, 585, 600, 615, 630, 645, 660, 675, 690, 705, 720, 735...
Step-by-step explanation:
I js need help with this question
Answers
Answer: D. y=-x+7
Step-by-step explanation: For example,
(-1,8)
x= -1
y=8
-(-1) = 1
1 + 7 = 8