the ratio of boys to girls at a movie is 4:7 if there are 21 girls how many boys are at the movie

Answers

Answer 1
Hi!

4:7
x:21

21/7 = 3
4 · 3 = 12

4:7
12:21

There are 12 boys at the movie.

Hope this helps! :)
Answer 2
If ratios aren't a strong thing for you, make it into a fraction and compare it that way.

4/7 = _/21

21 divided by 7 = 3

So, 3 times 4 = _

Related Questions

The cheerleading team lines up down the football field to rally the spectators. If there are 12 cheerleaders, which expression gives the number of ways can they line up down the field?

Answers

Final answer:

The number of ways 12 cheerleaders can line up is calculated using permutations, specifically 12!, which is the product of all positive integers from 1 to 12.

Explanation:

The number of ways the 12 cheerleaders can line up down the football field can be calculated using the concept of permutations. A permutation is an arrangement of all or part of a set of objects, with regard to the order of the arrangement. For 12 cheerleaders, each of whom is distinct, the number of different ways they can line up is the same as the number of permutations of 12 objects, which is given by the factorial of the number of objects.

The formula for permutations of n objects is n! (n factorial), where n represents the total number of objects. Therefore, for 12 cheerleaders, the expression for the number of ways they can line up is:

12!

This is calculated as 12 × 11 × 10 × 9 × ... × 3 × 2 × 1. The value of 12! (12 factorial) gives us the total number of possible arrangements for the 12 cheerleaders.

The Lions won 35 out of 40 games this season what fraction of the games played did the Lions won? Write your answer in a simplest form

Answers

35/40 = 7/8
 so 7/8 lions won 
7 out of 8 games they played they won because 35÷ 5 = 7  and 40 ÷ 5 = 8

If the area of the following figure is 46 square centimeters, what is the height of the trapezoid?

Bottom: 15 cm
Top: 8 cm

Dotted line with a box right before the curve from the top. Which is H.


4 cm
2 cm
5.75 cm
3.1 cm

Answers

Trapezoid is a four-sided figure with unequal bases. Only two of its sides are parallel. Its area is calculated through the equation,
                           A = MH
where A is area, M is median, and H is height. 

Median is calculated by the getting the average of the bases.
                        M = 0.5(b₁ + b₂)
Substituting the given,
                        M = 0.5(15 cm + 8 cm) = 11.5 cm

The equation for the value of H,

                          H = A/M
                          H = 46 cm²/(11.5 cm) = 4 cm

ANSWER: 4 cm

Answer:

4cm

Step-by-step explanation:

Area= 1/2(b1 +b2)(h)

46 = 1/2(8+15)(h)

46 = 1/2(23)(h)

46/11.5=11.5h/11.5

4 = h

Which is true? A 10.59 > 10.60 B 10.590 = 10.59 C 10.43 < 10.24 D 9.0005 = 9.0050

Answers

B is correct because the zero in 10.590 doesn't change the value of the number and 10.590 is equal to 10.59.

Hope this helps!

A) 10.59 > 10.60: True, because 10.59 is greater than 10.60.

B) 10.590 = 10.59: True, as they have the same value.

C) 10.43 < 10.24: False, as 10.43 is greater than 10.24.

D) 9.0005 = 9.0050: False, as they are not equal.

Use the concept of mathematical expression defined as:

Using operations like addition, subtraction, multiplication, and division, a mathematical expression is defined as a group of numerical variables and functions.

A) 10.59 > 10.60: This statement is true.

In decimal numbers, the higher the number, the greater its value.

Since 10.59 is greater than 10.60 (because 59 is greater than 60), this statement holds true.

B) 10.590 = 10.59: This statement is also true.

When two decimal numbers have the same digits after the decimal point, they are considered equal.

In this case, 10.590 and 10.59 have the same value.

C) 10.43 < 10.24: This statement is false.

Similar to the first option, the higher the number, the greater its value.

In this case, 10.43 is greater than 10.24,

So the statement is not true.

D) 9.0005 = 9.0050: This statement is also false.

Although the numbers are very close, they are not equal.

When comparing decimal numbers, each digit after the decimal point matters.

In this case, the numbers differ after the fourth decimal place, making them unequal.

Hence, the given expressions:

A) 10.59 > 10.60: True,

B) 10.590 = 10.59: True,

C) 10.43 < 10.24: False,

D) 9.0005 = 9.0050: False.

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Madison collage conducted a three-day orientation for incoming freshmen. Each day, an average of 110 students attend the morning session and an average of 160 students attend the afternoon session. write an expression that could be used to determine the total number of incoming freshmen who attended the orientation.

Answers

3(110+160) 3 days each say has 110+160 students

HELP
Kendra rides her bike to school each day. It takes her 10 minutes to ride 30 blocks. What unit rate expresses the speed of Kendra's bike ride?
2 blocks per minute
3 blocks per minute
4 blocks per minute
10 blocks per minute

Answers

The answer is 3 blocks per minute, because 30 divided 10 = 3.

Answer:

3 blocks.

Step-by-step explanation:

The answer is 3 blocks

Aaron's hourly rate is $8 more than Rachel's if both of them work for 2 hours and received a total of $124 what is Rachel's hourly pay

Answers

a=r+8, ok?

2*a + 2*r = 124, right?

a+r = 62, a = r+8 ---> 2r + 8 = 62, r = 54/2 =27, so

Rachel's hourly rate is $27, Aaron is $35.

Check: 1 hour both $62, 2 hours 124!
Rachel's hourly pay is $27/hour and Aaron's hourly pay is $35/hour. 
27 x 2 = 54
35 x 2 = 70
70 + 54 = 124

NEED HELP FAST!!!
15.
(08.06 MC)
Abril and Alanis put some money into their money boxes every week. The amounts of money (y), in dollars, in their money boxes after certain amounts of time (x), in weeks, are shown by the equations below:

Abril
y = 50x + 10

Alanis
y = 30x + 70

After how many weeks will Abril and Alanis have the same amount of money in their money boxes, and what will that amount be? (1 point)


3 weeks, $160

3 weeks, $210

4 weeks, $160

4 weeks, $210

Answers

A. 3, $160 because

Y = 50x + 10
Y = 30x + 70

Step 1 substitute your first number (3) for X .
Step 2 Solve . 50(3) = 150 + 10 = 160
30(3) = 90 + 70 = 160 Which Is Your Answer

The side of a square measures (4x − 7) units.

Part A: What is the expression that represents the area of the square? Show your work to receive full credit. (4 points)

Part B: What are the degree and classification of the expression obtained in Part A? (3 points)

Part C: How does Part A demonstrate the closure property for polynomials? (3 points)

Answers

Part A. A square is a two-dimensional shape with 2 sets of equal, parallel sides. The area of a square is equal to the square of its side. So, if the side measures (4x-7) units, then the area would be (4x-7)^2.

Part B. Let's expand the binomial in part A first. That would be equal to 16x^2 - 56x +49. There are different classifications of equation. There are linear equations, quadratic equations and exponential equations. In this case, the equation is a quadratic equation because it possesses the standard formula of a quadratic equation which is equal to ax^2 + bx + c = 0. On the other hand, the degree of the equation is the highest power of the variable. Since the highest degree is 16x^2, then the degree is 2.

Part C. Closure Property of Multiplications is if a and b are real unique numbers, then their product is also a unique real number. Part A demonstrates this property in a way because 4x-7 is multiplied with itself. It is considered unique because you can have different values for x. They are still unique. Also, the expanded quadratic equation is also unique.

The land ares of Florida is 1×100,000+3×10,000+9×1,000+8×100+5×10+2×1 square kilometers. Write in standard form and word form

Answers

139,851 square kilometers. one hundred thirty nine thousand, eight hundred fifty two.

Avani went to the grocery store and bought home a cardboard box that was covered with a sealed top Two end face of the box are squares The area of the face on either end is 64 square inches what is the length of the side of a square face? Plz help me plz

Answers

I think its probably 8 for the length and width because its a square that is equal to 64 inches

Mitch completes the course and his boss promotes him. Mitch receives a 25% increase on his previous pay of $40 000 per year after tax.

However, Mitch took out a Study Assist loan from the government to pay his course fee. This means that 4% of his new after-tax salary goes towards repaying the loan.

How much extra pay does Mitch actually end up with for the year?

Answers

Final answer:

Mitch's salary increases by $10,000 but he has to repay $2,000 for his loan. Therefore, he ends up with an extra $8,000 per year.

Explanation:

Mitch receives a 25% increase on his previous pay of $40,000 which equates to an additional $10,000 for the year (25% of $40,000 is $10,000), giving him a new salary of $50,000.

However, Mitch must pay 4% of his new salary towards his Study Assist loan. 4% of $50,000 equals $2,000. So he must repay $2,000 for his loan.

 

Therefore, the extra pay that Mitch actually keeps after paying his loan is $10,000 (rise in salary) minus $2,000 (loan repayment) which is $8,000 for the year. He ends up with $8,000 extra compared to his initial salary.

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PLEASE HELP WITH THESE TWO IM VWRY CONFUSED AND SIPER DUMD !!

Answers

Pretty sure 27 is be because it equals like 83.4444444 not one hundred perct sure but I think that's it.
I'm pretty sure its A) 50 like what you said Alyssa.
 I was not sure it was correct only

Donald eats 6 per minute so if you multiply it by 50 it will be 300. 500 - 300 = 200 burgers.

Wendy eats 4 per minute so if you multiply it by 50 it is 200. So 400 - 200 is 200 burgers. 


A pre-image point is rotated 90° clockwise. If the pre-image point had the coordinates (3, -5), what are the coordinates of its image point?


(-5, -3)

(5, 3)

(-3, 5)

(-3, -5)

Answers

(-5,-3). First one! First one! Need 20 characters lol

Answer:

(-5,-3)

Step-by-step explanation:

(08.03) Consider the following pair of equations:

y = 3x + 3
y = x − 1

Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form

Answers

combine two sequence, 3x+3=x-1. then, you can know x=-2. and put x value to any sequence. then, y= -3.
answer:(-2,-3)

The sum of the first natural number and 0 is 1, the sum of the first two natural numbers and 0 is 3, the sum of the first three natural numbers and 0 is 6, and the sum of the first four natural numbers and 0 is 10. Which explicit formula generates the sum of the first n natural numbers and 0?

A) n(n+1)/2
B) 2n-1
C) n(n+4)/4
D) 3n-2

Answers

The answer is A, it works with every number mentioned in the question.
The answer to your question is A) n(n + 1)/2

hope this helped and please vote me brainiest

Which logarithmic function has x=5 as its vertical asymptote and (6,0) as the x-intercept?

Answers

The answer is f(x)=log(x-5)

Which statement is true for the equation 4x − 4x − 5 = −5?

It has no solution.
It has one solution.
It has two solutions.
It has infinitely many solutions.

Answers

4x-4x-5=-5  combine like terms on left side

-5=-5

The above is true for all values of x, thus there are infinitely many solutions.
4x - 4x -5 = -5
0 - 5 = -5
0 = 0
The equation has infinitely many solutions.

the state fair is a popular field trip destination. This year the señior class at High school A and the señior class at High school B both planned trips there the señior class A rented and filled 8 vans and 8 buses with 240 students. High school B rented and filled 4 vans and 1 bus with 54 students. every van had the same number of students in it as did the buses. find the number of students in each van and each bus

Answers

8v + 8b = 240
4v + b = 54....multiply by -2
-------------------
8v + 8b = 240
-8v - 2b = - 108 (result of multiplying by -2)
------------------add
6b = 132
b = 132/6
b = 22 <== buses hold 22 students

4v + b = 54
4v + 22 = 54
4v = 54 - 22
4v = 32
v = 32/4
v = 8 <== vans hold 8 students

Answer:

The number of student in each van is 8. The number of student in each bus is 22.

Step-by-step explanation:

Consider the provided information.

Let the number of student in each van is x.

The number of student in each bus is y.

School A rented and filled 8 vans and 8 buses with 240 students.

This can be written as:

[tex]8x+8y=240[/tex]......(1)

School B rented and filled 4 vans and 1 bus with 54 students.

[tex]4x+y=54[/tex]

[tex]y=54-4x[/tex]......(2)

Substitute the value of y in equation (1).

[tex]8x+8(54-4x)=240[/tex]

[tex]8x+432-32x=240[/tex]

[tex]8x-32x=240-432[/tex]

[tex]24x=192[/tex]

[tex]x=8[/tex]

Thus, the number of student in each van is 8.

Substitute the value of x in equation (2).

[tex]y=54-4(8)[/tex]

[tex]y=54-32[/tex]

[tex]y=22[/tex]

Thus, the number of student in each bus is 22.

Dan bought a truck for $29,800. The value of the truck depreciated at a constant rate per year. The table below shows the value of the truck after the first and second years: Year 1 2 Value (in dollars) 26,522 23,604.58 Which function best represents the value of the truck after t years?

A.F(T)=29,800(0.89)^t
B.F(T)=26,522(0.89)^t
C.F(T)=29,800(0.11)^t
D.F(T)=26,522(0.11)^t

Answers

23604.58/26522=r^2/r

r=0.89

F(t)=29800(0.89)^t

Answer:

A

Step-by-step explanation:

did the test

show six
ways to add 2,3,4

Answers

2 + 3 + 4
2 + 4 + 3
4 + 3 + 2
4 + 2 + 3
3 + 4 + 2
3 + 2 + 4

Answer and Explanation:

Given : Numbers 2,3,4.

To find : Show six ways to add the numbers?

Solution :

As there are three numbers so arrangement of these numbers are as follow by changing there positions,

[tex]2+3+4=9[/tex]

[tex]2+4+3=9[/tex]

[tex]3+2+4=9[/tex]

[tex]3+4+2=9[/tex]

[tex]4+2+3=9[/tex]

[tex]4+3+2=9[/tex]

Above are the ways.

What is the ratio of the circumferences for two circles with areas 6π m and 150π m?

Answers

The ratio of the circumferences equals the ratio of the radii.

 so we need to find their radii


 first circle's radius:
pir^2 = 6pi
r = √6


 second circle's radius:
pir^2 = 150pi
r = √150


 Their ratio is
√6 : √150 =
√6 : √6√25 =
√6 : 5√6 =
1 : 5

The ratio of the circumferences of two circles with areas of 6π m² and 150π m² is 5:1.

To find the ratio of the circumferences of two circles given their areas, we first recall the formula for the area of a circle, A = πr², where A is the area and r is the radius. Knowing the area, we can solve for the radius of each circle. The areas given are 6π m² and 150π m².

To find the radius for the first circle, we set up the equation:

6π = πr²

We solve for r, yielding:

r = √6.

Similarly, for the second circle:

150π = πr²

This gives us:

r = √150.

Next, we use the formula for the circumference C = 2πr. We calculate the circumferences of the circles using their respective radii:

First circle's circumference: C1 = 2π(√6)

Second circle's circumference: C2 = 2π(√150)

Finally, to find the ratio of the circumferences, we divide C2 by C1 and simplify:

Ratio = C2÷C1 = (2π(√150))÷(2π(√6)) = √(150÷6) = √25 = 5.

Therefore, the ratio of the circumferences of the two circles is 5:1.

A pizza is cut into six unequal slices (each cut starts at the center). The largest slice measures 90 degrees

If Larry eats the slices in order from the largest to the smallest, then the number of degrees spanned by a slice decreases at a constant rate. (So the second slice is smaller than the first by a certain number of degrees, then the third slice is smaller than the second slice by that same number of degrees, and so on.)

What is the degree measure of the fifth slice Larry eats?

Answers

Let the common difference between 2 consecutive pizzas be x.

The pizza is cut into slices of

90°, 90°-x, 90°-x-x, 90°-x-x-x, 90°-x-x-x-x, 90°-x-x-x-x-x, 

that is

90°, 90°-x, 90°-2x, 90°-3x, 90°-4x, 90°-5x

the sum of these angles is 360°, so:

90°+90°-x+90°-2x+90°-3x+90°-4x+90°-5x=360°

90°*6-15x=360°

540°-360°=15x

180°=15x

x=12°

The degree measure of the fifth slice is 90°-4x=90°-4*12=90°-48=42°


Answer: 42°

1. A package weighs 2.6 pounds. How much do 8 of some sized packages weigh?

It takes Maxine 0.3 hours to make a pat holder. How many pat holders can she make in 4.5 hours

3. A box of garss seed weighs 0.62 pounds. HOw much does a box containing 0.75times as grass seeds weigh?

4. A collection of nickels is worth 18.60$. how many nickels are in this collection?

5. Mrs.Anderson bought party flavors for the 24 studentsin ther class. Each flavor costs
$2.27. How much did all the party flavors cost.

6. Each prize for a carnival booth costs $0.32. How many prizes can you buy with $96?

7. Bob has a pack of 24 pencils, each pencil weighs 0.9 grams. How much does the pack of pencils weigh?




Answers

Question 1: 20.8 pounds. You simply multiply the numbers.
Question 2: 15 pat holders. You divide 4.5 by .3.
Question 3: 1.085 pounds. You multiply .62 by 1.75 (the one being a representation of the .62).
Question 4: 372 nickles. You divide 18.60 by .05.
Question 5: $54.48. You multiply 24 by 2.27.
Question 6: 300 prizes. You will just divide 96 by .32.
Question 7: 21.6 grams. You can simply multiply 24 by .9 to yield this answer.

Hope this helped! If you need anything else just let me know!

A football player took forward and backward steps of equal length during the play.After taking 14 steps total , he was back at his starting position. How many steps did the football player take in the forward and backward directions? A.6steps forward and 8 backward B.7 forward 7 backward C.8 forward and 6 backward D.5 forward and 9 backward. I believe its B not sure

Answers

Pretty sure its B. too, but this seems unnaturally easy.

Answer:

7

Step-by-step explanation:

-7 + 7 = 0

7 steps forward 7 step backward

Meredith lives 24 blocks from her friends house. she travels 1 block per minute. What if she travels 2 blocks per minute? how many blocks would it take her to get to her friends house?

Answers

12 you have to do 24 divided by 2

Answer:

12 block

Step-by-step explanation:

We are given that Meredith lives 24 blocks from her friends house if she travels 1 block per minute .

We have to find the number of blocks if she travel 2 blocks per minute .

In order to find the number of blocks from Meredith friend house

we will divide 24 by 2

Therefore, if she travels 2 block per minute then she travel

[tex]\frac{24}{2}=[/tex]12 block

Hence, Meredith lives 12 block from her friends house if she travel 2 block per minute .

I need help please!!

Answers

I'll do 1 and 8, and you should then be able to do 2 and 9!

For 1, we can multiply these separately  - 3*4*9=108 and 5+7+2=13 (exponent multiplication is adding them!), so we have 108b^13

For 8, we can again add the exponents up to get (5/7)^8

What is the distance between the points (-4, 6) and (1, -6)?
1. 85
2. 13
3. 15
4. 29

Answers

1--4 = 5

-6 -6 = 12

5^2 = 25

12^2 = 144

144+25 = 169

sqrt(169) = 13

 distance = 13

A 150-unit apartment complex is infested with rats. The apartment caretaker checked 9 units and found the following number of rats {2, 5, 3, 1, 0, 3, 7, 2, 2}. If the sample data is representative of the rat population, how many units in the entire apartment complex have 3 rats?

Answers

{2, 5, 3, 1, 0, 3, 7, 2, 2} is the data set. We can find this by finding relative frequency of 3 = 2/9 = 0.22 and then 150 times .22 = 33 units
Final answer:

To estimate the number of units in the entire apartment complex that have 3 rats, we can use the proportion of units in the sample that have 3 rats and apply it to the total number of units in the complex.

Explanation:

To determine how many units in the entire apartment complex have 3 rats, we can use the concept of sampling. Since the apartment caretaker checked 9 units and recorded the number of rats in each, we can calculate the proportion of units with 3 rats in these 9 units. We can then apply this proportion to the entire apartment complex to estimate the number of units with 3 rats.

Out of the 9 units checked, there were 3 units with 3 rats. So the proportion of units with 3 rats in the sample is 3/9 = 1/3.

To estimate the number of units with 3 rats in the entire apartment complex, we can multiply the proportion of units with 3 rats in the sample (1/3) by the total number of units in the complex: 1/3 * 150 = 50. So, approximately 50 units in the entire apartment complex have 3 rats.

3 hours worked for$12;9 hours worked for $36

Answers

if you want to figure out how much for 1 hour, the answer is $4 per hour
Final answer:

This answer explains the concept of Labor Economics and Wages by calculating the hourly rate from given total pay and total hours worked.

Explanation:

The subject of this question involves Labor Economics and Wages.

In this scenario, the wage for working 3 hours is $12, while for working 9 hours, the pay is $36. To determine the hourly rate, we can use the formula: Hourly Rate = Total Pay / Total Hours Worked. Applying this formula, we find the hourly rate to be $4 per hour.

Example:

3 hours worked for $12 -> Hourly rate = $12 / 3 hours = $4 per hour9 hours worked for $36 -> Hourly rate = $36 / 9 hours = $4 per hour

Other Questions
99 POINTS PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Was the cost of the war higher for the North or the South? Be sure to consider the social, political, and economic effects of the war.Explain, in a paragraph of your own words, which side paid a higher price for the war.Include at least two specific pieces of evidence from the lesson to support your response.Include information from at least two sections of the lesson (CHOOSE TWO HERE: Social, Economic, or Political) to support your response. Sarah has become overweight. She enjoys pastries or ice cream every day. Her doctor has advised her to lose some weight. Which is the best strategy for Sarah? a.)cut her calorie intake in half and exercise vigorously for an hour every dayb.) take a long walk after eating a pastry or ice creamc.) eat smaller portions of her favorite high-calorie foods and eat them less often just need to check these answers Which statement best describes scientific theories? Select one: A. Scientific theories are what laws are called before they are proven. B. Scientific theories attempt to explain why natural events occur. C. Scientific theories are based on opinions. D. Scientific theories describe natural events. What type of innervation of the smooth muscle of the eye causes constriction of the iris? Janis has just volunteered to undergo treatment for drug addiction. after she leaves the clinic, she is ________ to stay off drugs because her recovery at the clinic was ________. What is metallurgy? the study of how to domesticate animals the science that studies how metals work a Hindu sacred ritual for cleansing the body the belief that natural objects have supernatural beings in them Which type of angle is ABC? A doorway is 8 feet high and 4 feet wide. A square piece of plywood needs to be moved through the doorway. The plywood is 10 feet long and 10 feet wide. The door is a rectangle with a height of 8 feet, and a width of 4 feet. A dotted line shows the diagonal.Will the piece of plywood fit through the door if it is tilted diagonally?A. No, because the length of the diagonal is close to 9 feet.B.No, because the height of the door is less than 10 feet.C.Yes, because the length of the diagonal is close to 11 feet.D.Yes, because the sum of the height and width of the door is greater than 10 feet. Imagine you are an Olympic speed skater. Explain which kinds of clothes you should wear to increase your speed. Other than air resistance on clothing, what other forces are working against your speed? What are some ideas reducing these other forces? (picture to help) to express the importance of living in the present moment, what word does housman emphasize in the poem? A. twenty B. nowC. cherry D. springs Why did the writings of the poet Virgil and the historian Livy focus on the rise and fall of Roman power? The acid-dissociation constants of sulfurous acid (h2so3) are kal = 1.7 10-2 and ka2 = 6.4 10-8 at 25.0c. calculate the ph of a 0.163 m aqueous solution of sulfurous acid. Suppose a study estimated that 85% of the residents of a town (with an error range of 12 percentage points at 95% confidence) favor building a new community center. Which of the following percentages of the town's residents may favor building a new community center? A.69% B.79% C.59% D.99% A business's day-to-day activities are best described as its ________ concerns How many grams of water are needed to dissolve 27.8 g of ammonium nitrate? The point (3,5)is on the graph of a function. Which equation must be true regarding the function?f(3) =5f(3,5) =8f(5) =3f(5,3) =2 JL is a common tangent to circles M and K at point J. If angle MLK measures 61, what is the length of radius MJ? Round to the nearest hundredth. (Hint: Show that triangles LMJ and LKJ are right triangles, and then use right triangle trigonometry to solving for missing sides of the right triangles.) Answers for 1.2.1 how can I describe a graph Can an experiment that has several variables be used to explain a theory Steam Workshop Downloader