18:8, 27:12 and 45:20 are ratios are equivalent to 9:4.
Define ratioA ratio is a mathematical comparison between two or more quantities that indicates how many times one quantity is contained within another. Ratios are expressed in the form of a fraction, with the first quantity being the numerator and the second quantity being the denominator.
three ratios that are equivalent to 9:4
18:8 - We multiplied both the numerator and denominator by 2.27:12 - We multiplied both the numerator and denominator by 3.45:20 - We multiplied both the numerator and denominator by 5.All of these ratios are equivalent to 9:4, because they represent the same ratio of 9 parts to 4 parts.
To know more about numerator, visit:
https://brainly.com/question/11976355
#SPJ1
Lines AB and CD are parallel.
If the measure of N equals 67°, what is the measure of P?
A. 23°
B. 158°
C. 113°
D. 67°
Answer:
C
Step-by-step explanation:
P and N are a linear pair and sum to 180° , that is
P + 67° = 180° ( subtract 67° from both sides )
P = 113°
A solid cylinder of height 9 cm has a diameter of 14 cm.
This cylinder has a cylindrical hole of diameter 6 cm at its
centre.
Calculate the volume of the hollowed cylinder.
V = πr^2h
V1 = π14/2^2•9
V1 = π7^2•9
V1 = π49•9
V1 = 1,385.442360233099
V2 = π6/2^2•9
V2 = π3^2•9
V2 = π9•9
V2 = 254.4690049407733
V = V1 - V2
V = 1,385.442360233099 - 254.4690049407733
V = 1,130.973355292326 or 1,130.97
Thus, the volume of the cylinder is 1,130.97cm^3.
I have at least 20 potatoes
The option C represent the correct inequalities.
What is inequality ?
Inequality refers to the condition where there is an unequal distribution of resources, opportunities, and benefits among individuals or groups in a society. This can be based on various factors, such as income, wealth, race, gender, ethnicity, education, and social class.
Inequality can take many forms, ranging from economic inequality where some individuals or groups have much more wealth or income than others, to social inequality where some groups face discrimination or exclusion based on their identity.
Inequality can have negative consequences for individuals and society as a whole, including reduced social mobility, increased poverty, and social unrest. Addressing inequality often involves implementing policies and initiatives that aim to level the playing field and provide equal opportunities for all individuals, regardless of their background or circumstances.
Inequality can be represented using various mathematical symbols and expressions, depending on the type of inequality being discussed. Here are some examples:
For a simple inequality comparing two numbers, we use the following symbols:
Greater than: >
Less than: <
Greater than or equal to: ≥
Less than or equal to: ≤
To know more about inequalities visit :-
https://brainly.com/question/24372553
#SPJ1
Help! What do I graph?
Answer:
Step-by-step explanation:
Shalina uses the expression 3x to determine the cost of x notebooks. What is the cost of 24 notebooks?
$8
$27
$62
$72
If 3x is the cost of x notebooks, we can find the cost of 24 notebooks by substituting x = 24:
3(24) = 72
Therefore, the cost of 24 notebooks is $72.
During one season, a baseball team has a total attendance of about 3,500,000 people. Tuesday games account for 18% of the total attendance. What is the attendance for the Tuesday games? Which picture and equation best represent the problem?
Answer:
630 000
Step-by-step explanation:
We have to find 18% of the number 3 500 000:
[tex] \frac{3500000 \times 18\%}{100\%} = 630000[/tex]
-14 > 7, so -14 is located below 7 on a vertical number line. true or false?
Answer:
True
Step-by-step explanation:
What is a vertical number line?A vertical number line is line that runs vertically, or up and down. Starting from 0, it has positive numbers moving up and negative numbers moving down.
Based on what we know, positive numbers move up on a vertical number line and move to the right on a horizontal number line. Negative numbers move down on a vertical number line and to the left on a horizontal number line.
So, because 14 is negative, and it's on a vertical number line, it would be below any positive number such as 7.
In short, the answer is true because negative numbers are below or behind positive numbers.
A department store sells a pair of shoes with an 87% markup. If the store sells the shoes for $193.21 then what is their non-markup price, rounded to the nearest dollar?
The non - markup price of the pair of shoes is $103. The solution has been obtained by using the arithmetic operations.
What are arithmetic operations?
It is believed that the four fundamental operations, often known as "arithmetic operations," adequately explain all real numbers. After division, multiplication, addition, and subtraction in mathematics are the operations quotient, product, sum, and difference.
We are given that the store sells the shoes for $193.21 which includes the 87% markup.
So, using the subtraction operation, we get
⇒ Non - markup price = ($193.21 * 100) ÷ 187
⇒ Non - markup price = $19321 ÷ 187
⇒ Non - markup price = $103.3208
Hence, the non - markup price of the pair of shoes is $103.
Learn more about arithmetic operations from the given link
brainly.com/question/30283549
#SPJ1
#
AB is tangent to OC at B, and AD is tangent to OC at D. Find the value of x.
Answer:-72x
Step-by-step explanation:
what is the sum of the exterior angles of a 25-gon
Answer:
360∘
The sum of the exterior angles of a polygon is always 360∘ . Therefore, the sum of the exterior angles of a 25-gon is 360∘ .
Plss help i dont know what these shapes are called
PLEASE PLEASE HELP IT IS DUE TONIGHT!!!
I need help with number 9.
20=4x(p-1)
solve this equation
Answer:
[tex]x = \frac{5}{p - 1} [/tex]
p ≠ 1
Step-by-step explanation:
20 = 4x (p - 1)
20 = 4xp - 4x
4xp - 4x = 20
(4p - 4)x = 20 / : (4p - 4)
[tex]x = \frac{20}{4p - 4} = \frac{20}{4(p - 1)} = \frac{5}{p - 1} [/tex]
we determine the scope of the definition:
4p - 4 ≠ 0
4p ≠ 4 / : 4
p ≠ 1
How much would you have to deposit in an account with a 7.5% interest rate, compounded continuously, to have $2500 in your account 8 years later? P = $[?] Round to the nearest cent.
We would need to deposit approximately $1372.03 into an account with a 7.5% interest rate, compounded continuously, to have $2500 in the account 8 years later.
How much would be deposited in the account with interest compounded continuously?To calculate this, we can use the continuous compounding formula: [tex]A = Pe^(rt)[/tex]
Data:
We know that we want to end up with $2500 after 8 years and that the interest rate is 7.5%.
We can plug in these values and solve for P:
2500 = P * e^(0.075*8)
Simplifying this equation, we get:
2500 = P * e^0.6
Dividing both sides by e^0.6, we get:
P = 2500 / e^0.6
P = 2500/1.82211880039
P = 1372.02909024
P ≈ $1372.03.
Read more about continuous compounding
brainly.com/question/30751082
#SPJ1
Help pls due soon 10 points
Answer:
1.28*10^6
Step-by-step explanation:
It is up to you whether you convert 1400000 into scientific notation or convert 1.2*10^5 into decimal notation, subtract, and then convert once more into scientific notation for your final answer.
Either way, it will come out to be 1.28*10^6
Work is below:
1.2*10^5 = 120,000
1400000 - 120000 = 1280000
= 1.28*10^6 (remember it is every number behind the decimal)
Mrs. Cook ordered 200 zinnia plants for $23. One month later, she ordered 500 zinnia plants for $35. Using the cost per zinnia plant in problem #5, write a linear equation to represent the cost, C, to purchase z number of zinnia plants.
A. C=0.04z
B. C=0.25z
C. C=0.04z−15
D. C=0.04z+15
The linear equation to represent the cost, correct answer is A) C = 0.04z.
What is equation?
An equation is a mathematical statement that shows the equality of two expressions. It consists of two parts, the left-hand side (LHS) and the right-hand side (RHS), separated by an equal sign (=).
To find the cost per zinnia plant, we can first find the cost per plant for each order separately, and then take the average.
For the first order of 200 zinnia plants at a cost of $23, the cost per plant is:
$23 ÷ 200 = $0.115
For the second order of 500 zinnia plants at a cost of $35, the cost per plant is:
$35 ÷ 500 = $0.07
To find the average cost per plant, we can take the total cost and divide by the total number of plants:
($23 + $35) ÷ (200 + 500) = $0.067
So the cost per zinnia plant is $0.067.
Now we can write the linear equation to represent the cost, C, to purchase z number of zinnia plants:
C = 0.067z
Therefore, the correct answer is A) C = 0.04z.
To learn more about equation visit:
https://brainly.com/question/2972832
#SPJ1
Taub is younger than Chloe. Their ages are consecutive integers. Find Taub's age if the product of their ages is 12.
NEED HELP WITH THIS
Answer:
Let x be Taub and y for Chloe
y-x=1. since their ages are consecutive
y-1=x
xy=12.…..... eq 1
(y-1)y=12....... eq 2
y²-y-12=0
y=4 or y=-3
since age can never be a negative, we choose y=4 and substitute in eq 1
4x=12
x=12/4=3
Taub is 3 years old
I need somebodys help quickly please!
(look at the attachment it shows the math equation).
Answer:
here ya go, i didnt really feel like tpoing so its in the picture
Step-by-step explanation:
Find the equation of the line shown. (I tried y=1x+6 it doesn’t work.)
Answer: y = x + 6
Step-by-step explanation:
For every unit moved right, the next point is one unit up. This gives us a slope of 1, which we can simplify to just x in the final equation.
[tex]\frac{rise}{run} =\frac{1}{1}=1[/tex]
We see that the graph intersects the y-axis at (0, 6), giving us a y-intercept of + 6.
Lastly, we will write the equation.
y = x + 6
Try it without the 1. Usually we simplify as anything multiplied by 1 is itself.
THIRTY FIVE POINTS!!!!!
Factor completely.
X^3 - 8x^2 - 2x + 16 =
whats an expression for the bracelets?
An expression for the number of bracelets of n beads, where rotations.
Whats an expression for the bracelets?
In mathematics, the term "bracelets" can refer to a type of combinatorial object, specifically, a set of beads arranged in a circular pattern. An expression for the number of bracelets of n beads, where rotations and reflections are considered identical, can be given as follows:
B(n) = (1/n) * (2raise to the power (n-1) + Σ(d|n, d<n) μ((n/d)) * 2 raise to the power ((n/d)-1))
Here, B(n) represents the number of distinct bracelets of n beads, Σ denotes the summation, d|n denotes "d divides n", and μ is the Möbius function.
The first term in the expression, (1/n) * (2 raise to the power (n-1)), represents the number of bracelets that are invariant under rotation. The second term takes into account the bracelets that are not invariant under rotation, but are invariant under reflection, and involves the Möbius function.
This expression can be used to calculate the number of bracelets for any value of n, by plugging in the value of n and evaluating the expression.
To know more about equations visit :-
https://brainly.com/question/22688504
#SPJ1
Use the key features of the polynomial f(x) = 2x3 + 5x2 − 2x − 3 to describe its end behavior
the end behavior of the polynomial function f(x) = [tex]2x^3 + 5x^2 - 2x - 3[/tex] is that it increases without bound as x approaches positive infinity, and decreases without bound as x approaches negative infinity.
To describe the end behavior of a polynomial function, we need to examine the degree and leading coefficient of the function. In the polynomial function f(x) =[tex]2x^3 + 5x^2 - 2x - 3[/tex], the degree is 3 and the leading coefficient is 2.
The end behavior of the polynomial function f(x) is determined by the behavior of the function as x approaches positive infinity and negative infinity.
As x approaches positive infinity, the leading term dominates the behavior of the function. Since the leading coefficient is positive and the degree is odd, the function will increase without bound, or approach positive infinity. In other words, as x becomes very large and positive, the function will also become very large and positive.
As x approaches negative infinity, the leading term also dominates the behavior of the function. However, since the degree is odd, the function will decrease without bound, or approach negative infinity. In other words, as x becomes very large and negative, the function will also become very large and negative.
Therefore, the end behavior of the polynomial function f(x) = [tex]2x^3 + 5x^2 - 2x - 3[/tex] is that it increases without bound as x approaches positive infinity, and decreases without bound as x approaches negative infinity.
learn more about polynomial here
https://brainly.com/question/11536910
#SPJ4
Suppose another team of researchers in 2009 believed that the rate of encounters in which the
whale comes within 3,281 feet of the bow in the lower bay sub-region of Glacier Bay was higher
than 20%. This team observed a sample of 85 encounters between cruise ships and whales in the
lower bay: the whale came within 3.281 feet of the bow in 25 of these encounters
Assuming P equals 0.03 and N equals 85 use the dCMP normal distribution tool to calculate the probability that p falls between 0 and 0.06.
The probability that p falls between 0 and 0.06 is 0.00000205.
How to calculate the probability
Based on the information, to calculate the probability that p falls between 0 and 0.06, we need to first calculate the standard error (SE) of the sample proportion, which can be calculated as:
SE = ✓[ p * (1-p) / N ]
where p is the sample proportion and N is the sample size.
In this case, we have:
p = 25/85 = 0.2941
N = 85
SE = ✓[ 0.2941 * (1-0.2941) / 85 ] = 0.0545
Next, we need to calculate the z-score corresponding to the upper limit of the interval (0.06). This can be calculated as:
z = (0.06 - p) / SE = (0.06 - 0.2941) / 0.0545 = -4.4702
Using the dCMP normal distribution tool, we can find the probability that a standard normal random variable falls below this z-score as:
P(z < -4.4702) = 0.00000205
Learn more about probability on;
https://brainly.com/question/24756209
#SPJ1
in a class of 55 freshman, 38 are studying c and 24 are studying java. how many students are studying both programming languages?
There are 7 students who are studying both programming languages in the given class of 55 freshman.
This can be determined using a Venn diagram.
A Venn diagram is a graphical representation of sets or classes. The diagram shows sets, their elements, and the union, intersection, and complement of these sets.
A set is a collection of distinct objects, considered as an object in its own right. The elements of a set are frequently things of a similar nature, and sets are characterized by a distinctive property.
The size of a set is represented by the number of elements it contains. Let's use the following symbols to represent sets:
A={Elements in set A}
B={Elements in set B}
The intersection of sets A and B is the set of elements that are in both sets A and B. This can be expressed in the following way
n(A∪B) = n(A) + n(B) - n(A⋂B) where n(A⋂B) is known as intersection
The number of students studying both programming languages can be calculated by taking the intersection of the two sets.
We can use this formula to calculate the number of students studying both programming languages
:|A∩B|=|A|+|B|-|A∪B|
Where |A| denotes the number of elements in set A studying C programming
|B| denotes the number of elements in set B studying Java
|A∪B| denotes the number of elements in the union of sets A and B (total students)
Now we can substitute the given values into the formula as follows
|A∩B|=38+24−55=7
Therefore, there are 7 students studying both programming languages.
Learn more about intersection of sets : https://brainly.com/question/20886002
#SPJ11
What is the simplest form of the expression 6x(x − 4) − 16x2 − (9x − 1)?
Answer: -10x^2 - 33x + 1
Step-by-step explanation:
Not sure if it’s correct but that’s what I got.
Answer:
[tex]\tt 10x^2-33x+1[/tex]Step-by-step explanation:
[tex]\tt 6x\left(x-4\right)-16x^2-\left(9x-1\right)[/tex]
Apply the distributive property :-
[tex]\tt 6x^2-24x-16x^2-9x+1[/tex]
Combine like terms:-
[tex]\tt 6x^2-16x^2=\bf -10x^2[/tex]
[tex]\tt -24x-9x=\bf -33x[/tex]
[tex]\tt 10x^2-33x+1[/tex]
---------------------------------------
Hope this helps!
if you are studying the relationship between the number of hours of overtime assigned at your facility and the number of defects in your product, what would the independent variable be?
The independent variable in a study is the one that can be controlled or manipulated, and in this case, it is the number of hours of overtime assigned at the facility.
To better understand the relationship between the two variables, we can use mathematical terms. Let's consider X as the independent variable, which represents the number of overtime hours assigned, and Y as the dependent variable, which represents the number of defects in the product. In this case, we can express the relationship between X and Y as:
Y = f(X)
This means that the value of Y is a function of the value of X. In other words, the number of defects in the product depends on the number of overtime hours assigned.
To determine the nature of the relationship between X and Y, we can plot a graph with X on the horizontal axis and Y on the vertical axis. If the graph shows a positive correlation, it means that an increase in X leads to an increase in Y, and vice versa. On the other hand, if the graph shows a negative correlation, it means that an increase in X leads to a decrease in Y, and vice versa.
Finally, if there is no correlation, it means that there is no relationship between X and Y.
To know more about variable here
https://brainly.com/question/17344045
#SPJ4
suppose a basketball player makes 80% of his free throws. assume that free throw shots are independent of one another. suppose this player gets to shoot four free throws. find the probability that he makes all four free throws.
The probability that a basketball player makes all four of his free throws when the probability of making one is 80% is 0.4096.
This is calculated using the binomial probability formula, which states that the probability of k successes in n trials is given by the following:
P(k successes in n trials) = [tex](n!/(k!(n-k)!))\timespk(1-p)(n-k)[/tex]
In this case, the probability of making a single free throw is 80% (0.8),
so we can plug this into the formula.
We know that the player is taking 4 free throws, so k is 4 and n is also 4.
Plugging these values into the formula, we get:
P(4 successes in 4 trials) = [tex](4!/(4!(4-4)!))\times 0.84(1-0.8)(4-4) = 0.4096[/tex]
for such more question on probability
https://brainly.com/question/24756209
#SPJ11
question visitors to a public library were asked how many miles they lived from the library. the table shows their responses. number of miles 1.52.33.521.81.81.90.52.52.44.83.70.622.42.51.50.51.80.8 of these visitors, the first 10 people to check out books lived the following miles from the library. number of miles0.51.80.81.83.54.80.621.50.5what is the sample mean for the data? enter your answer in the box.
The sample mean for the given data set is 3.044 miles.
Let's use the given data to calculate the sample mean. We have the distances in miles that 10 visitors live from the library: 0.5, 0.8, 0.8, 1.5, 1.8, 3.5, 4.8, 6.2, and 8.3.
To find the sample mean, we first add up all the distances:
0.5 + 0.8 + 0.8 + 1.5 + 1.8 + 3.5 + 4.8 + 6.2 + 8.3 = 27.4
Next, we divide the sum by the total number of distances, which is 9 (since we have data for 10 visitors):
27.4 / 9 = 3.044 (rounded to three decimal places)
This means that, on average, the visitors to the library live about 3.044 miles away from the library.
To know more about mean here
https://brainly.com/question/30891252
#SPJ4
Need helpppppp
12 points!!
Answer:
41 chickens and 9 cows
Step-by-step explanation:
Chickens have 2 legs each.
Cows have 4 legs each.
There are 50 animals total.
There are 118 legs total.
You can set up a system to represent this situation.
Let x represent the number of chickens and y represent the number of cows.
x + y = 50
2x + 4y = 118
Multiply the first equation by 2 and subract it from the second equation.
2x + 4y = 118
- 2x + 2y = 100
_____________
2y = 18
y = 9
So there are 9 cows. There are 50 animals total so there must be 41 chickens.
There is a total of 50 chickens and cows.
Chickens have 2 legs each. Cows have 4 legs each.
There are 118 legs in total. We are focusing on how much chickens there are.
CHICKENS=50-COWS.
2CHICKENS+4COWS=118
2(50-COWS)+4COWS=118
100-2COWS+4COWS=118
2COWS=118-100
2COWS=18
C0WS=18/2
COWS=9
CHICKENS+9=50
CHICKENS=50-9
CHICKENS=41
PROOF:
2*41+4*9=118
82+36=118
118=118
This is a bit long and confusing but I hope this helps!
Two numbers have the following properties. The sum of the larger and twice the smaller is equal to 13. Twice their positive difference is equal to eight. What are the two numbers? Play around with modeling this problem using variables. Create careful let statements and equations that translate the information you are given into a system you can solve.
Answer:
Step-by-step explanation:
The required larger and smaller number is 7 and 3 respectively.
What are equation models?
The equation model is defined as the model of the given situation in the form of an equation using variables and constants.
Here,
Let the larger number be x and smaller number be y,
According to the question,
the sum of the larger and twice the smaller is equal to 13.
x + 2y = 13 - - - -(1)
And, twice their positive difference is equal to eight.
2(x - y) = 8
x - y = 4 - - - -(2)
Subtracting equation 1 by 2
3y = 9
y = 3
Now,
x - y =4
x -3 = 4
x = 7
Thus, the required larger and smaller number is 7 and 3 respectively.
Learn more about models here:
brainly.com/question/22591166
#SPJ2