There are 80 students in a 8th grade, 20% are boys. How many boys are in 8th
grade?

Answers

Answer 1

Answer:

16 boys

Step-by-step explanation:

Lets go with easy example:

20% of 100 students means 20 students: what is done there

We converted 20% to 20/100 so

[tex]\frac{20}{100}*100=20[/tex]

Lets do the same with 80 students as well

[tex]\frac{20}{100}*80=16[/tex]

Answer 2

Answer:

16

Step-by-step explanation:

[tex]\frac{20}{100} x \frac{x}{80} =16[/tex]

or do

80 x 0.20=16

both works


Related Questions

3m + 9=2(2m-3) solve for m

Answers

Answer: M= 3.75

Step-by-step explanation:

A groups of friends were working on a student film that had a budget of $1300 they used 43% of their budget on costumes. How much money did they spend on costumes

Answers

they spent $559 on costumes

What is the measure of DFG
28
62
118
152

Answers

Answer:

angle dfe = 28°(by vertical opposite angle)

Half a number increased by the quotient of p and t

Answers

Answer:

Step-by-step explanation:

Let the number be 'x'

Half a number = [tex]\frac{1}{2}x[/tex]

Half a number increased by the quotient of p and t

[tex]\frac{1}{2}x+\frac{p}{t}[/tex]

What is (f +g)(y) for the functions
look at the picture for answer choices :)

Answers

Answer:

B

Step-by-step explanation:

Remark

I'm not sure why (f + g)x is there at all. All you are instructed to do is add the two given functions together.

Solution

(f+g)y = 5x^2 - 2y + 1 - 3y^2 - y - 2

(f+g)y = 2y^2 - 3y - 1

That's B

PLEASE ANSWER THIS ASAP I WILL MARK YOU THE BRAINLIEST

Answers

You just literally mark the graph, you see the 1st points (2,12) go on the X axis to 2, then go up to 12 and mark that as a point. and continue with this tactic with the rest.

Answer:

I think this is correct. <3

Solve the system of linear equations by substitution.
3x – 2y = 23
x + 2y = 13
The solution of the system is

Answers

Answer:

point form : (9,2) equation form : x=9 y=2

Step-by-step explanation:

find the total surface area of this cone ​

Answers

Answer:

Step-by-step explanation:

3.14*10*(10+24^2+10^2 squared)

31.4*5870 squared

31.4*76.62

240.5554

I don't know if this is right

13 more than a number is 29
13 + n = 29
13 + 29 = n
n + 29 = 13
13n = 29
29n = 13

Answers

Answer:

id.k if this is right sorry if it wrong

Answer:

It should be the 3rd option

Step-by-step explanation:

I hope this helps

If y is directly proportional to x and y = 17.5 when x = 21.

Answers

Then what’s the question?

Let a be a rational number and b be an irrational number. Is a+b rational or irrational?
Please HALP

Answers

when you add a rational number to an irrational number, the result will have the same infinite non periodical decimal part, so the new number will be irrational as well.

(6.03)
Which of the following best describes the expression 6(y + 3)?

Answers

Answer:

what are the followings..........

Answer:

i think

6y+18

...........

identify the scale factor

Answers

Answer:

4

Step-by-step explanation:

30*4=120 because 12=3*4 and 30*4 is basically 3*4*10, and since it's asking for the scale factor, we test to see if 12*4=48, which it does.


PLEASE HELP IMMEDIATELY!! WILL GIVE BRAINILIESTT

Answers

Answer:

First box, fourth box, sixth box

Step-by-step explanation:

Positive in division means either both numbers are positive or negative

SOMEONE PLEASE HELP ME ILL GIVE YOU BRAINLY IF YOU GET IT RIGHT!!!!

Answers

Answer:

A

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

1. P(E)>P(D) (Event E is more likely to occur, therefore it has a greater probability)

2. P(E)>0.5 (The probability of event D is given as 0.5, so rewrite P(D) in the inequality)

3. 0.5 is equal to 0.5 and 0.1 is less than 0.5, so you can rule out options A and D

4. This leaves us with options 1.5 and 0.9, but it is impossible to have a probability that is greater than equal to one, so you can immediately rule out B

5. After this elimination process, the only remaining answer is C) P(E)=0.9

54 divided by 7 is???

Answers

Solution:-

[tex] \implies \sf \boxed{ \sf7.71}[/tex]

The remainder is 5 when 54 is divided by 7.

What is Division?

Division in mathematics is the process of dividing an amount into equal parts. For instance, we may split a group of 20 people into four groups of 5, five groups of 4, and so on.

Given:

We have to divide 54 by 7.

So, the division is

                            7 | 54 | 7

                                  49

                              -_____

                                     5

Then, the remainder is 5 because we do not have number further and 5 is smaller than divisor.

Learn more about Division here:

brainly.com/question/21416852

#SPJ5

simplify


5/8 m³ + 2 - 1.4 m³ =

Answers

Answer:

-0.775m^3 + 2

The two dot plots show the number of miles ran by 14 students at the beginning and at the end of the school year compare each measure of the two dot plots

Answers

The two dot plots are missing, so i have attached it.

Answer:

The mean at the beginning of the school year was 9.5 miles and the mean at the end of the school year was 10.2 miles

Step-by-step explanation:

From the attached image, we are told to compare the means for each plot to the nearest tenth.

Mean = Σx/n

Now, from the image, total number of miles run by the 14 students at the beginning of the school year is;

(1 × 7) + (2 × 8) + (4 × 9) + (4 × 10) + (2 × 11) + (1 × 12) = 133

Mean of miles run at the beginning of the school year = 133/14 = 9.5 miles

Again, from the table, total miles run at the end of the school year = (2 × 8) + (2 × 9) + (4 × 10) + (3 × 11) + (3 × 12) = 143

Mean of miles run at the end of the school year = 143/14 = 10.2 miles

Thus;

The mean at the beginning of the school year was 9.5 miles and the mean at the end of the school year was 10.2 miles

Find the volume of the Cone. Use 3.14 for . Round your answer to the nearest hundredth ( 2 decimals). Show your work in this question, and record your answer in the next question.

Answers

Answer:

2,616.67cm³

Step-by-step explanation:

Find the diagram attached

volume of the cone = πr²h/3

r is the radius = 10cm

h is the height = 25cm

Substitute

V = 3.14(10)²*25/3

V = 314*25/3

V = 7850/3

V = 2,616.67cm³

Hence the volume of the cone to the nearest hundredth is 2,616.67cm³

Joe and Josh each want to buy a video game. Joe has $14 and saves $10 a
week. Josh has $26 and $7 a week. In how many weeks will they have the
same amount?

pls help and give a step by step explanation

Answers

Answer:

Number of week they have same amount = 4 week

Step-by-step explanation:

Given:

Amount Joe have = $14

Joe's saving per week = $10

Amount Josh have = $26

Josh saving per week = $7

Find:

Number of week they have same amount

Assume;

Number of week they have same amount = a

So,

(14 + 10a) = (26 + 7a)

3a = 12

a = 4

So,

Number of week they have same amount = 4 week

Find the due dates and maturity value for a $13,600 loan made to Jim Kovalchuk on February 7 for nine months at 11% interest

Answers

Answer:

26,600

Step-by-step explanation:

10 percent= 1,360

1 percent= 136

+=1,496

*9 =10,000

the other answer to this is wrong :/ It would actually be

A total of $14,722 must be repaid on November 7.

PLS HELP FOR 60 POINTSS PLSS IF U HELP ILL SEND 30 MORE POINTSS

There are 3 times as many students participating in the hiking trip this year than last year. There are 42 students on the trip this year.

1.Write an equation that represents the number of students that came on the hiking trip last year

2.How many students attended the hiking trip last year?

Answers

Answer:

1.  42/x

2.  14 students

Step-by-step explanation:

1.  42 divided by x

    x=students on trip last year

2. 42 divided by 3

    42/3=14 students this year

 

Express the division expression as a fraction. 4 ÷ 3

Answers

Answer:

4/5 or 1 1/3

Step-by-step explanation:

4 over 5, or 1 and then 1 over 3

(11y-36)°
63°
Solve for y

Answers

Answer:

y = 9°

Step-by-step explanation:

Vertical Angles law

63° = 11y - 36

63+36 = 99

11y = 99

y = 9

the function f of x equals negative (x - 3 in the presidency squared plus sine can be used to represent the area of a rectangle with a perimeter of 12 units as a function of the length of the rectangle x what is the maximum area of the rectangle​

Answers

Answer:

Step-by-step explanation:

Ft

Write the equation of the line in fully simplified slope-intercept form.

Answers

Answer:

y = 1/2x + 1

Step-by-step explanation:

The slope is the change in y over the change in x. The line goes down one and two left, making the slope 1/2.

The line crosses the y axis at positive  1 and that is the y-intercept.

Can a triangle have side lengths 10, 12, 15?
1.not enough information
2.no
3.yes

Answers

Answer:

The answer is 3. yes

I agree with the other person the answer is 3

In reading class, Phillip read 38 of a book. Alicia read 58 of the same book.
Tell how you know who read more.

Answers

Answer:

phillip

Step-by-step explanation:

because phillip read 38 books and alicia read 1 book 58 time and the reason i picked phillip cause he read different books with more pages and alicia read the same book that probably had a little bit of pages

sorry if it is wrong

can somebody help me with this one? I've never been good at this in math​

Answers

Answer:

I'm pretty sure it's reflective and hypotenuse

Step-by-step explanation:

find the value of given expression

[tex] \sqrt{99 \times 33 \times 3} [/tex]

Answers

Answer:

√{99×33×3}=√{33×3×33×3}=√(33²×3²)=±33×3=±99

Answer:

99

Step-by-step explanation:

Cause 33×3=99 ,and the function of the root is to get the number that we multiply it ti itself

For example [tex]\sqrt{4}[/tex] =2 cause 2×2=4 ,so[tex]\sqrt{2*2}[/tex] =[tex]\sqrt{4}[/tex] which is =2

so [tex]\sqrt{99^{2} }[/tex] =99

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