There were 28 children in the final of the Air Guitar competition. If 25% of the finalists were girls, who
many boys were there in the final?

Answers

Answer 1
Answer: 21 of the finalists were boys.
Explanation:
We are trying to figure out what 25% of 28 is. We can convert 25% into a fraction.
25%= 1/4 and 28= 28/1
Multiply and you’ll get: 28/4 which equals 7.
So 25% of 28 is 7.
With the remaining step, you subtract 7 from 28 to get the amount of boys in the final because 7 is the amount of girls.
28 finalists- 7 girls = 21 boys

Related Questions

192.4-(52+3) times 2

Answers

Answer:

82.4

Step-by-step explanation:

412/5,82 2/5 ︎ ︎ ︎ ︎ ︎ ︎ ︎

︎ ︎ ︎︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎

︎ ︎ ︎︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎ ︎

Answer:

274.8

Step-by-step explanation:

( 192.4 - ( 52 + 3 ) ) * 2

Simplify, remember the order of operations;

( 192.4 - ( 52 + 3 ) ) * 2

( 192.4 - ( 55 ) ) * 2

( 192.4 - 55 ) * 2

( 137.4 ) * 2

274.8

Please help!!!!! Can show work I’m stuck !!!!!!!!!

Answers

P= 21 A= 30 I think I’m not sure sorry

HELLLPPPP PLEASSSSEEE &&& THANK UUUU

Answers

Answer:

y = -1/2x + 1

General Formulas and Concepts:

Algebra I

Slope-Intercept Form: y = mx + b

m - slope b - y-intercept

Step-by-step explanation:

Step 1: Define variables

Slope m = -1/2

y-intercept b = 1

Step 2: Write linear function

y = -1/2x + 1

he first five multiples for the numbers 4 and 6 are shown below.

Multiples of 4: 4, 8, 12, 16, 20, . . .
Multiples of 6: 6, 12, 18, 24, 30, . . .

What is the least common multiple of 4 and 6?
2
4
12
24

Answers

Answer:

12

Step-by-step explanation:

Answer: 12

Step-by-step explanation:

You are canning 40 cups of applesauce. You have 20 glass jars, each of which will hold 134 cups of applesauce. Choose the correct explanation(s) that explain why you do not have enough jars.


You do not have enough jars because 20 jars will only hold 35 cups of applesauce.

You do not have enough jars because you have enough applesauce left to completely fill 2 more jars, and almost fill a third jar.

You do not have enough jars because you need a total of 40×134=70 jars.

You do not have enough jars because the 20 jars would need to hold 2 cups each, but each holds 14-cup less than that.

Answers

Answer:

B

Step-by-step explanation:

took the test

A triangle has interior measures of 20° and 90°. What is the measure of the third angle?

Answers

Angles in a triangle sum to 180 degrees

180 - 90 - 20
= 70 degrees

rate of change of 15

Answers

Answer:A General Note: Rate of Change

The average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.

Step-by-step explanation:

3600
in standard
form

Answers

Answer:

3.6 x 10^3

Step-by-step explanation:

A researcher claims that the variation in the salaries of elementary school teachers is greater than the variation in the salaries of secondary school teachers (the claim). A random sample of 30 elementary school teachers has a variance of $ 8324, and a random sample of 30 secondary school teachers has a variance of $2862. At α= 0.05, can the researcher conclude that the variation in the elementary school teachers' Salaries is greater than the variation in the secondary teachers' salaries? Use the P-value method.
Assume that all variables are normally distributed.

a. State the hypotheses and identify the claim.
b. Find the critical value.
c. Compute the test value.
d. Make the decision.
e. Summarize the results.

Answers

Answer:

a

The null hypothesis is  [tex]H_o : \sigma^2_1 = \sigma^2 _2[/tex]

The alternative hypothesis is [tex]H_a : \sigma_1 ^2 > \sigma^2_2[/tex]

b

[tex]F_{critical} = 1.8608[/tex]

c

[tex]F = 2.9085[/tex]

d

    The decision rule is  

Reject the null hypothesis

e

There is sufficient evidence to support the researchers claim

Step-by-step explanation:

From the question we are told that

 The first sample size is  [tex]n_1 = 30[/tex]

 The sample variance for elementary school is  [tex]s^2_1 = 8324[/tex]

 The second sample size is  [tex]n_2 = 30[/tex]

  The sample variance for the secondary school is  [tex]s^2_2 = 2862[/tex]

   The significance level is  [tex]\alpha = 0.05[/tex]

The null hypothesis is  [tex]H_o : \sigma^2_1 = \sigma^2 _2[/tex]

The alternative hypothesis is [tex]H_a : \sigma_1 ^2 > \sigma^2_2[/tex]

Generally from the F statistics table  the critical value of [tex]\alpha = 0.05[/tex] at first and  second degree of freedom [tex]df_1 = n_1 - 1 = 30 - 1 = 29[/tex] and  [tex]df_2 = n_2 - 1 = 30 - 1 = 29[/tex] is  

         [tex]F_{critical} = 1.8608[/tex]

Generally the test statistics is mathematically represented as

       [tex]F = \frac{s_1^2 }{s_2^2}[/tex]

=>   [tex]F = \frac{8324 }{2862}[/tex]

=>   [tex]F = 2.9085[/tex]

Generally from the value obtained we see that  [tex]F > F_{critical }[/tex] Hence

   The decision rule is  

Reject the null hypothesis

    The conclusion is  

  There is sufficient evidence to support the researchers claim

   

An elevator started at the first floor and went up 18 floors. It then came down 11 floors and went back up 16. At what floor was it stopped?

Answers

Answer:

24th

Step-by-step explanation:

1+18=19

19-11=8

8+16=24

PLEASE HELP!
Find x - y less than 0.
A. - y - x
B. x - y
C. - x + y

Answers

the answer is c) - x + y

Part A and Part B for Max's car together cost $1,693 dollars, Part A cost $58 dollars
more than twice what Part B cost. How much did each part cost?

Answers

Answer:

  Part A:   1148

  Part B:   545

Step-by-step explanation:

  Part A:   2x + 58

  Part B:   x

  2x + 58 + x = 1693

        3x + 58 = 1693

                3x = 1635

                  x = 545

  Part A:   2x + 58  =  2(545) + 58 = 1148

  Part B:   x = 545

Parallel lines r and s are cut by two transversals, parallel lines t and u. Lines r and s are crossed by lines t and u to form 16 angles. Clockwise from top left, at the intersection of r and t, the angles are 1, 2, 3, 4; at the intersection of s and t, 5, 6, 7, 8; at the intersection of u and s, 9, 10, 11, 12; at the intersection of u and r, 13, 14, 15, 16. Which angles are alternate interior angles with angle 3? Angle5 and Angle13 Angle7 and Angle15 Angle6 and Angle16 Angle8 and Angle14 Mark this an

Answers

Answer:

5 and 13

Step-by-step explanation:

I got it right on edge

Answer:

5 and 13, got in right in edge 2020

Step-by-step explanation:

5/8 ÷ 1/4 help I will give brainalest ​

Answers

Answer:

your answer is 2.5 or 2 1/2

Answer:

Result in decimals: 2.5

Result in fractions 2 1/2

Step-by-step explanation:

WHAT IS THE ANSWER PLZ I WILL MARK BRAINLIEST!!!

Answers

Answer:

There is something already at the positive 2 place and you are just subtracting 2 because of (-2)

I hope that helps :)

Step-by-step explanation:

plz mark B R A I N L I E S T

11 ^ 2 power equals what

Answers

A number raised to a power is the same as multiplying the number by itself the number of times of the power.

11^2 = 11 x 11 = 121

The answer is 121

The problem is in the picture

Answers

It should be the first answer choice between those two

answeerrrrrrrr pleaseeeee C:

Answers

Answer:

140 feet

Step-by-step explanation:

3 seconds times 20 = 1 minute

so you have to do 7 feet times 20 to get 140

For question 15-16, find the value of x that would prove y || z. State the conserve used to support your answer.

Answers

Answer:

There is not enough information, but in any case, rephrase.

a vase costs $2 bridget has some money if she gets $4.45 more she can buy 5 vases how much money does she have

Answers

Answer:

Bridget has $5.55.

Step-by-step explanation:

First let's find how much money Bridget needs to buy 5 vases. To do this, multiply the cost per vase by the amount of vases she wants to buy:

2 * 5 = 10

It would cost $10 to buy 5 vases.

Bridget needs $4.45 in order to buy 5 vases. So, to find how much money she already has, subtract the amount of money she needs from the total cost of the 5 vases:

10 - 4.45 = 5.55

Bridget has $5.55.

Answer:

$ 5.55

Step-by-step explanation:

Find the price of 5 vases

Cost of 5 vases = 5 * 2 = $ 10

She needs $4.45 to buy 5 vases. If we subtract this 4.45 from $10, the result will be the money she has already with her

Money Bridget has = 10 - 4.45

                               = $ 5.55

Find the amount of interest to be paid.
Principal: $780
Annual Rate of Interest: 12 1/2%
Time: 6 months

Use the formula: i = prt (principal, rate, time)

Answers

Answer:

P = 780

R = 12 1/2%

T = 6

780 x 12 1/2% x 6 = $2808.005

pls answer my question​

Answers

Answer:

x = 23

Step-by-step explanation:

Exterior angles equals the sum of opposite interior angles.

2x+  3 + 51 = 100

Combine like terms.

2x + 54 = 100   {Subtract 54 from both sides}

        2x = 100 - 54

       2x = 46    {Divide both sides by 2}

       x = 46/2

x = 23

I NEED HELP ,PLEASEEEE!!!!!

Shonda goes to a restaurant with no more than $15 to spend. She buys a burger that costs $10.50 and one other item. Write an equation to express how much money Shonda spent at the restaurant.

Answers

Answer:

she spent $10.50 sense she didnt buy anything she has  $4.50 left

Step-by-step explanation:

A store had 50 bottles of olive oil. Each week, 40% of the olive oil bottles were sold and 20 new bottles arrived in shipments. Which recursive function best represents the number of bottles in the store, given that f(0) = 50?

Answers

Answer:

f(n) = f(n-1)*.6 + 20

Step-by-step explanation:

f(0) = 50

f(n) = f(n-1)*.6 + 20

In fact, since f(0) = 50, f(n) = 50.

What is the answer plz!!!! I Will mark brainliest!!!!!!

Answers

Answer:

a. she doesnt have any points

b. just draw 3 circles with a plus in them

c. kiara has 7 points

d. -7+7=0

Step-by-step explanation:

mark me brainliest

you can mark me brainliest by clicking the crown at the bottom of this answer

can anyone answer number 2? Thank you

Answers

ANSWER:

2570000

Step-by-step explanation:

0.003 * 7

0.021 + 1

1.021

2,520,000 * 1.021

2572920

rounds to

2570000

Kendra is buying a Nintendo Switch with a price tag of $300. The sales tax rate where Kendra is purchasing the
Switch is 9.5%. How much will Kendra pay altogether for the Switch?

Answers

Answer: So for the 9.5% percent I'm not sure if you mean by 9.5% off the price or more for the price so Ill just do both

If you subtract $300 from 9.5% you get 271.5 US$

But if you add $300 to 9.5% you get 328.5 US$

I need help with this please

Answers

To find slope, pick any 2 points and use formula: (y2-y1)/(x2-x1)
2 points on line: (4,0), (0,-2)
(-2-0)/(0-4) = -2/-4 = 1/2
a) the slope is 1/2

Y = 1/2x + b
0 = 1/2(4) + b
0 = 2 + b, b = -2
b) -2 is the y intercept

Put the equation together
c) y = 1/2x - 2

PLZ HELP ME I BEG YOU !!!!!!!!!!!!!!

Answers

3x200= 600
1000-600=400
400 divided by 5 = 80
answer is 80 adults

can u mark me brainliest?

ABCDE is a
regular pentagon
find the angles of ADC?​

Answers

Answer:

Since this regular polygon has 5 vertices (implied from the ABCDE), it's a regular pentagon. (This means an equilateral, equiangular pentagon.)  So, 360 deg./5 =72 deg., and 180 - 72 = 108).

Step-by-step explanation:

Other Questions
Help its due tomorrow What type of particles move to create electicity?electronsprotonsneutrons Which of the following locations is most likely to have cold weather patterns?A.lands near the Tropic of CancerB.mid-latitude land that has oceans on at least one sideC.lands near the equatorD.land that is at high elevations PLEASE HELP ME!!!Help me by naming all the moon phases that are happening in each number.Please, and Thank You!Will Mark Brainliest!!! The length of the base of an isosceles triangle is x. The length of a leg is 3x-5. The perimeter of the triangle is 60. Find x Marti, Joel, and Oscar each ate 325calories at lunch each day for 18 days.About how many calories did theyeat in all? HElp me plzzzzz?????? A large pipe dispenses 750 gallons of water in 50 seconds .at this rate how long will it take to dispense 330 gallons Read the passage below and use the information to answer the question that follows. Joey is the oldest of three children. Like his siblings, he has has brown hair and green eyes. His sister likes to dance and his brother is a talented guitar player, but Joey does not like either of these activities. He enjoys basketball. Since Joey is very tall, he plays center on the basketball team at his high school, practicing hard so that he can get a basketball scholarship to college. Which of the following statements about Joey refer to genetic factors? Check all that apply. Joey has brown hair. Joey likes to play basketball. Joey has green eyes. Joey is very tall. Joey hopes to get a college scholarship The distance between (-4,6) and (3, -7) is *round to the nearest tenth!! Marcy determined that her father's age is the quotient of her age and 5, increased by 10. If x represents Marcy's age, write an expression that represents her father's age? the length of a rope that was measured to be 36cm was later found to be actually 60cm,what was the percentage error?. The price of 2 dozen cobs of corn (which is 24 cobs) is $7.20. Joanna want to buy just 3 cobs of corn. How much will she pay? Can I please get help I need help Ill mark you the brainliest Please I need some answers Please help again. I have gotten another math question. Following World War II, the countries of Eastern Europe were all __________.A.British coloniesB.communist countriesC.part of ChinaD.independent nationsPlease select the best answer from the choices providedABCD What purposes did the Code Noir serve? Check all that apply. It established laws for slaveholders to follow. It set out to control the behavior of enslaved workers.It outlined punishments for enslaved workers who broke rules. It established laws for free people of color to follow in society. It outlined laws for the interaction of whites and free people of color. Which word correctly completes this sentence?No hay nadie en la clase que __________ un lapicero.A. tieneB. tenerC. tengaD. tienen 5) Austin kept his inhaler in his pocket because .A) he often needed to use it. B) he had no where else to keep it.C ) he needed to have it for reassurance. D) he wanted to know where it was at alitytimes .