There are 20 children in a class 45% are girls, How many girls and boys are there?

Answers

Answer 1

Answer:

Step-by-step explanation:

each person represents 5%. so 45% are girls. 45/5 is 9, so 9 are girls. 20 minus 9 is 11 so 9 girls and 11 boys

Answer 2

The number of girls is 9 and the number of boys is 11.

Important information:

Total number of students = 2045% of total students are girls.Percentage:

Using the given information, the number of girls is:

[tex]20\times \frac{45}{100}=9[/tex]

Now, subtract the number of girls from the total number of students.

[tex]20-9=11[/tex]

Therefore, the number of girls is 9 and the number of boys is 11.

Find out more about 'Percentage' here:

https://brainly.com/question/813490


Related Questions

Which binomials are factors of x2−8x−48? Select the two correct answers.
x + 4
x−6
x−4
x + 6
x−12
x−8
x + 12
x + 8

Answers

Answer:

(x - 12)(x + 4)

Step-by-step explanation:

The two numbers have equal the b term which is -8

You know you have to subtract to get your answer because there is a minus sign in front of the c term

Find what factors of 48 subtract to = -8

-12 + 4 = -8

I'm failing math pls help

Answers

*Slope A*

A good trick to use to find a negative slope is to see if it is falling downwards.

C is ruled out since it is going straight up. B has a slope of -2/1 and you can tell that by counting the distance from the origin to the next point where it touches the line.

Hope this helps!

Looking at the linear equation, y= 4x-2, identify which is your independent variable and which is your dependent variable.

Answers

Answer:

option b

Step-by-step explanation: i took this test and got 100

PLEASEE SOMEONE ANSWER ILL DO ANYTHING ANYTHING PLEAASEEE HELP ME this is myh 6th time posting this ;[

Answers

Answer: the third one

Step-by-step explanation:

Please helppp number 11

Answers

Answer:

(1/3)⁷

Step-by-step explanation:

negative exponents work like this:

x⁻²=(1/x)²

Apply this theory to this equation:

3⁻⁷=

(1/3)⁷

what is the 8th term of the geometric sequence 8,16,32

Answers

the 8th term of the geometric sequence 8, 16, 32 is 1024

Explanation

we know that

geometric sequence 8, 16, 32

the question is

the 8th term

the answer is

first we have to find the ratio

[tex] \sf r= \frac{ U_2}{U_1} \\ \sf r= \frac{ 16}{8} \\ \sf r = 2 [/tex]

than, we have to find the 8th term

[tex] \sf U_n = ar^{n-1} \\ \sf U_8 = 8 \times 2^{8-1} \\ \sf U_8 = 8 \times 2^7 \\ \sf U_8 = 8 \times 128 \\ \bold {\sf U_8 = 1024} [/tex]

Learn more

About geometric pattern

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Answer details

grade: 7th

subject: mathematics

chapter: sequence

keywords: geometric sequence

10 2/7 to improper fraction

Answers

Answer:

72/7

Step-by-step explanation:

the area of a small square is 25 square units what is the exact length in units of a single of a large square

Answers

Answer:

5

Step-by-step explanation:

The area of any quadrilateral can be determined by multiplying the length of its base by its height. Since we know the shape here is square, we know that all sides are of equal length. From this we can work backwards by taking the square root of the area to find the length of one side.

Solve the following system of equations.
3 x + 2 y − 5 = 0
x = y + 10

Answers

Answer:(5,-5)

Step-by-step explanation:

Graphing these two equations means that they intersect at the point (5,-5)

Simplify: ( 1^0+2^1+3^2) ÷ 22/ 5^0​

Answers

Step-by-step explanation:

( 1 + 2 + 9 ) ÷ 22/ 1

12 ÷ 22

6 ÷ 11

cc: Anything raised to the power of zero is 1

Answer:

6(1/11)

Step-by-step explanation:

( 1^0+2^1+3^2) ÷ 22/ 5^0​

( 1+2+9) ÷ 22/ 5^0

( 1+2+9) ÷ 22/ 1

( 1+2+9) • 1/22

12 • 1/22

6(1/11)

Hope this helps!

Just curious what is 52 x 34 - 342

Answers

The answer is 1,426

H b e j l

Answer:

1426

Step-by-step explanation:

52 x 34 = 1768

1768 - 340 = 1426

In the figure above, rectangle V'W'X'Y' is a dilation of rectangle VWXY. What is the scale factor of the dilation?

A. 0.25
B. 2
C. 343 fourths
D. 14

Answers

Answer:

D. [tex] \frac{1}{4} [/tex]

Step-by-step explanation:

Given that rectangle V'W'X'Y' is a dilation of rectangle VWXY, this means that the dimensions of rectangle VWXY was reduced by to get the dimensions of V'W'X'Y'.

Therefore, the ratio of any segment of V'W'X'Y', to a corresponding segment of VWXY would be equal to the scale factor.

W'X' = 5

WX = 20

Therefore:

Scale factor = [tex] \frac{5}{20} = \frac{1}{4} [/tex].

A scale factor that is a fraction tells us that the original figure reduced in size resulting into another new figure whose sides are of proportional lengths to the original figure.

In other words, the original figure was compressed go form a new figure.

If the vertex of a parabola is (- 3, 4) and the parabola has a stretch of 3find the next two points on the parabola right the vertex

Answers

Answer:

Step-by-step explanation:

Need help asap please

5 x 2 = what pls

Which graph below represents the linear inequality y ≥ 5/2x - 4?

A.)

B.)

C.)

D.)

Answers

Answer:

I believe graph B.) I hope this helped u :)

Step-by-step explanation:

Hi, may I get some help?

Answers

Answer:

First add the number of bags. Then make sure you the percent of the total of each weight.

Step-by-step explanation:

if you rlly want to know the answer its

4+10+20+24+18+6 bags is 82

4 is 4.8 percent of 82

10 is 12.1 percent of 82

20 is 24.3 percent of 82

24 is 29.2 percent of 82

18 is 21.9 percent of 82 and

6 is 7.3 percent of 82

so answer a is 40 pounds and less

29.2+24.3+12.1+4.8=70.4 percent so its wrong

so answer b is wrong too

answer c is 29.2+21.9+7.3=58.4 so its right but we have to check d

answer d is 4.8+12.1=16.9 so its wrong

THE ANSWER IS C

and may i pwetty please have brainly crown

Sam and Taylor own and operate a car wash service. Sam cleans the interior of each car and Taylor cleans the exterior. The time it takes Sam to finish the interior has a mean of 20 minutes with a standard deviation of 6.4 minutes. The time it takes Taylor to finish the exterior has a mean of 18 minutes with a standard deviation of 4.8 minutes. Both of their finishing times are approximately normally distributed.
Suppose we select a car at random, and define the random variable D as the difference between their finishing times. We can assume that their times are independent.
Find the probability that they finish within 10minutes of each other.
You may round your answer to two decimal places.
P\left(|D|<10\right)\approxP(∣D∣<10)≈P

Answers

Answer: 0.77

Step-by-step explanation:

Khan academy answer

Hello People, so i am stuck on this and i would really LOVE if you helped me, and if you do you would get alot of points and even brainliest!

Answers

Answer:

-2.5 is the answer to this question

Answer:

so you put an arrow on -3 and then a arrow on or between 4 and 5 that will be 0.5

Step-by-step explanation:

pls mark me brainliest

Ms. Guthrie spent 80% of her cash on gifts.
What fraction of her cash did she spend on gifts?
She spent type your answer...
of her cash on gift.

Answers

Answer:

She spend (8/10) or (4/5) of her cash on gift.

Step-by-step explanation:

4/5 is simplified.

but not simplified its 8/10

I need help can someone help please !!

Answers

The answer is B and I know

At every company meeting, the president speaks for 28 minutes and then takes questions from her employees. Let q represent the number of minutes she spends answering questions and t represent the total number of minutes the meeting lasts.

Answers

Answer:

t = 20 + q in minutes

Step-by-step explanation:

Company meeting = president speech + questions + answers

President speech = 20 minutes

Questions and answers = q minutes

Total time spent = t minutes

Total time spent = President speech + Total time spent

t = 20 + q

The equation that represents the relationship between q and t is

t = 20 + q in minutes

A road is made in such a way that the center of the road is higher off the ground than the sides of the road, in order to allow rainwater to drain. A cross-section of the road can be represented on a graph using the function f(x) = (x – 16)(x + 16), where x represents the distance from the center of the road, in feet. Rounded to the nearest tenth, what is the maximum height of the road, in feet?

0.1

Answers

Answer:

2

Step-by-step explanation:

i answered this

Kristopher has a coupon for $10 off any item at his favorite electronics shop. If he plans to use the coupon to purchase and item that costs $80, by what percentage will the price be decreased before tax?

Answers

Answer:

12.5%

Step-by-step explanation:

Kristopher has a coupon for $10 off any item at his favorite electronics shop. If he plans to use the coupon to purchase and item that costs $80, by what percentage will the price be decreased before tax?

The formula for Percentage Decrease =

Decrease in price/ Initial price × 100

Decrease in price = $10

Initial price = $80

Hence:

$10/$80 × 100

= 12.5%

Hence, the percentage the price will be decreased by before tax is 12.5%

The price of milk increased from $2 to $2.50.What is the percent of the change for the price of the milk.

Answers

Answer:

20%

Step-by-step explanation:

im just built different

Answer:
25%

Step by step explanation:
Because It’s the correct answer and you should believe me.

PLs HELPPpppPPPppppPPp
13 points + brainliest pls help!!
Either send the answers or fill in the pdf using doc hub or pdf escape pls dont answer if u dont know this is really srs to me : )

Answers

Answer:

I could tell you that the fist second and third would be < > <

Step-by-step explanation:

Find the slope of the line in the image.
someone plz helpppp

Answers

Answer:  The answer I got is -2/4 Hope this help :)

Step-by-step explanation:(-2,6)(2,4)

M=y2-y1

   x2-x1

 4-6     = -2

2-(-2)   =  4

The slope is -2/4

Answer:

-1/2

Step-by-step explanation:

Because the line segment is going from left to right down it is negative. From the end point on the it goes down 1 and over 2 consistently.

Consider the enlargement of the triangle.

A small triangle has a base of 1.7 feet and height of 9.3 feet. A larger triangle has a base of 3.5 feet and height of x feet.
Not drawn to scale

Rounded to the nearest tenth, what is the value of x?
15.8 feet
19.1 feet
23.3 feet
32.6 feet

Answers

Answer:B 19.1 feet

Step-by-step explanation:

The value of the x is 19.1 feet.

What is ratio?

"It is an ordered pair of numbers a and b, written [tex]\frac{a}{b}[/tex] where b does not equal 0."

What is proportion?

"When two ratios are equal then they are said to be in proportion."

For given question,

A small triangle has a base of 1.7 feet and height of 9.3 feet.

A larger triangle has a base of 3.5 feet and height of x feet.

Since it is the enlargement of the triangle, the sides of both the triangle must be in proportion.

[tex]\Rightarrow \frac{1.7}{3.5}= \frac{9.3}{x}\\\\\ \Rightarrow 1.7\times x=3.5\times 9.3\\\\ \Rightarrow 1.7\times x=32.55\\\\ \Rightarrow x=19.14[/tex]

Therefore, the value of the x is 19.1 feet.

Learn more about the ratio and proportion here:

https://brainly.com/question/26974513

#SPJ2

Which of the following is the factored form of the expression 18 + 12?​

Answers

6(3 + 2)

thats the answer

Answer:

30 the answer to it question

Kareem cannot decide which of two washing machines to buy. The selling price of each is ​$480. The first is marked down by 30​%. The second is marked down by 20​% with an additional 10​% off. Find the sale price of each washing machine. Use pencil and paper. Explain why Kareem should buy the first washing machine rather than the second if the machines are the same except for the selling price.

Answers

Answer:

1. $336

2.$345.6

Step-by-step explanation:

First off the first machine is cheaper because of the 30% off of the total price rather than 20 off the price then another 10 percent off that price.

mine says marked down by 30. then 10. then 20

HELP DUE SOON!!!Elise says, "If you subtract 14 from my number and multiply the difference by - 4, the result is
- 100." What is Elise's number?
Elise's number is

Answers

Answer:

39

Step-by-step explanation:

If you subtract 14 from my number and multiply the difference by -4, you should get -100.

You need to setup the equation that is being given to you.

Subtract 14 from my number.

x - 14

Multiply the difference by -4

(x-14) * -4

You should get -100.

(x-14) * -4 = -100

Solve for x

(Elise's number is X, the missing number).

[tex]-4(x-14) = -100\\-4x+56 = -100\\-4x=-156\\x=39[/tex]

Elise's number is 39.

Need help ASAP!!!! :)

Answers

Answer:

B. All real numbers

General Formulas and Concepts:

Algebra I

Domain is the set of x-values that can be inputted into function f(x)

Step-by-step explanation:

According to the graph, we see that the line's x-values span from negative infinity to infinity. Therefore our domain encapsulates all real numbers.

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