Mathematics High School

Middle school students were asked how they got to school each morning. There were 120 students who said
they walked to school. This number represents 30% of the school enrollment. How many students are
enrolled?

Answers

Answer 1

Answer: 400

Step-by-step explanation:

n = 400

if we choose n as the number, we write are able to write an equation, or number problem.

30% of n = 120

now solve.

first we need to convert 30% to fraction form, which is 30/100.

the reciprocal of 30/100 is 100/30. now multiply 120 by 100/30

(120 x 100) / 30 = 400!

Related Questions

The library is having a book sale. Hardcover books sell for $4 each, and paperback books are $2 each. If Ayanna spends $26 for 8 books, how many hardcover books did she buy?​

Answers

she bought 5 hardcover books and 3 paperback books
5x$4= $20
3x$2= $6
$20+$6=$26

hope this helped

Answer:

5 hardcover books

Step-by-step explanation:

x + y = 8 ↔ Assume x for hardcover books and y for paperback cover

4x + 2y = 26 ↔ Total cost of 8 books is $26

-2x - 2y = -16 ↔ Multiply Equation 1 by -2 so that the coefficients of y is opposite

2x = 10 ↔ Add the two equations to eliminate y

x = 5 ↔ Divide each side by 2

Hope this helps!! :)

Brainlest Pleasee

I'm in 8th grade I need help with this question please help me

Answers

In slope intercept form it would be y=10+6x

QUICK PLEASE!!!!!
please solve this for me thanks

Answers

Answer:

2.5

Step-by-step explanation:

FG is the exact same as FE which is 2.5.

John has $50 in his bank account. He gets his usual allowance of $20 and mows two lawns, earning $10 each. He puts that money in the bank. Then John spends $45 on a video game.

Answers

He has 45 dollars left

Is 16/3 simplified ?

Answers

no, it should be 5.3 repeating as a fraction. divide 16/3 and turn it into a fraction

In ΔPQR, p = 220 inches, q = 890 inches and ∠R=121°. Find the length of r, to the nearest inch.

Answers

the value of r will be 970 inches Approx.

What are the properties of Triangle?

The properties of the triangle are: The sum of all the angles of a triangle (of all types) is equal to 180°. The sum of the length of the two sides of a triangle is greater than the length of the third side. In the same way, the difference between the two sides of a triangle is less than the length of the third side.

Given, In ΔPQR, p = 220 inches, q = 890 inches and ∠R=121°.

From the general formula of side of triangle:

c² = a² +b² - 2ab * cos ∠C

In Our case,

a = p = 220

b = q = 890.

c = r

∠C = ∠R = 121 degrees

Thus,

r² = 220² + 890² - 2*220*890 * cos 121°

r² = 941344.455067

r = 970.229073501

r = 970 inches Approx.

Therefore, the value of r will be 970 inches Approx.

Learn more about triangles here:

https://brainly.com/question/2773823

#SPJ1

HELP ASAPPP PELASEEEEE

Answers

Answer:

10π cm

Step-by-step explanation:

We require to find the radius (r) of the circle

The area (A ) is calculated as

A = πr² = 25π ( divide both sides by π )

r² = 25 ( take the square root of both sides )

r = [tex]\sqrt{25}[/tex] = 5

The circumference (C) is calculated as

C = 2πr = 2π × 5 = 10π cm

Select all that apply.

Which rates are equivalent to 25 miles per gallon? i need help lol im failing

Answers

Can you add a picture ? Or tell me the answer choices ?

Subtract: −11−(−6)
please help i can noot g iit

Answers

-5 is the answer
-11-(-6)= -5

Answer:

-5

Step-by-step explanation:

-11-(-6)

-11+6

-5

If this helps please mark as brainliest

how do you write x is less than 4 in symbols​

Answers

Answer:

x < 4  or 4 - x

Step-by-step explanation:

Hope I helped please give me the brailiest if you dont mind :)

Please and thank you :)

if two pizzas cost $14.50 how much will 15 pizzas cost​

Answers

Answer:

108.75

Step-by-step explanation:

7.25 x 15 = 108.75

If 4x+ 3 = 9x − 4, then x = ?
F. 75 G. 57 H. 713 J. 15 K. −15

Answers

Answer:

Step-by-step explanation:

Jhbiko

Answer:

7/5

Step-by-step explanation:

4x+3=9x-4

3=9x-4-4x

3=5x-4

3+4=5x

7=5x

7/5=x

x= 7/5

is this one of the choices I hope it helps.

Please help. I don't understand this.​

Answers

Answer:

radius=6

Step-by-step explanation:

arc ACB=6xPi

Pi=3.14159

arc ACB=18.85 (rounded to 2 places)

ACB is a half circle so a full circle would be 18.85x2 or 37.7

circumference (whole circle)=2 x Pi x radius

37.7=2 x 3.14159 x radius

radius= 37.7/(2 x 3.14159)

radius=6

What the rate of change of the function y = 3/2x + 5?

Answers

Answer: 3/2

Step-by-step explanation: Rate of change is the same thing as the slope.

I NEED HELP ASAP!!!!!!! I WILL GIVE BRAINLIEST!!!!!!!!!
Chris had 30 minutes to do a three-problem quiz. He spent 11 3/4 minutes on question A and 4 1/2 minutes on question B. How much time did he have left for question C?

Answers

Answer:Chris spent 13 3/4 minutes on question C

Step-by-step explanation:

First let's write an equation:

We know 30 is the total and we are trying to find a part, and 11 3/4 is a part and 4 and 1/2 is a part

So:

30=11 3/4 + 4 1/2 + x

30=16 1/4 + x

- 16 on both sides(to find what x equals to)

13 2/4=x

X=13 3/4

please help asap!!!look at the box

Answers

I think it’s B might be wrong though

Answer:

y

Step-by-step explanation:

What are the solutions to this equation?
2x^2=-10x +12

a) x=-3
b) x=1
c)x=-6
d) x=6
e)x= 6
f)x=-2

​

Answers

Answer:

2x^2=-10x +12

2x²+10x-12=0

2(x²+5x-6)=0

x²+6x-x-6=0/2

x(x+6)-1(x+6)=0

(x+6)(x-1)=0

either

x=-6

x=1

pleased help me answer this I'm confused. look at picture​

Answers

Answer:

23 + 16 = 39

39 - 16 = 23

the student did not reverse the sum correctly

what is 17 + (6 + 2x)

Answers

Answer:

23 + 2x

Step-by-step explanation:

17 + 6 + 2x

23 + 2x

Margaret deposits $1,000 in a savings account that pays 1.4% interest compounded
semiannually. What is her balance after 1 year?

Answers

Answer:

The balance after 1 year is;

$1,014.05

Step-by-step explanation:

To do this, we use the compound interest formula

That will be ;

A =P (1 + r/n)^nt

A is the amount generated which we want to calculate

r is the rate = 1.4% = 0.014

P is the amount deposited = $1,000

n is the number of times it is compounded annually which is 2 (semi-annually means 2 times in a year)

this the number of years which is 1

we have this as:

A = 1,000( 1 + 0.014/2)^(2*1)

A = 1,000(1 + 0.007)^2

A = 1,000(1.007)^2

A = $1,014.05

A number divided by –8 is 7.
Equation:
Steps:

Solution:

Answers

Answer:

.

Step-by-step explanation:

Answer:

-56

Step-by-step explanation:

Let the said number be x, so

x / -8 = 7

That's the equation

On solving further, we cross multiply to have

x = -8 * 7

x = -56

That means the number is -56

Rectangle A is 10 times as long as rectangle B.



If rectangle A is 80 units long, select all the ways to find the length of rectangle

Answers

Answer:

8

Step-by-step explanation:

80/10=8

Will mark brainliest

Answers

Answer: C= 10

Step-by-step explanation:

Answer:

c= 10 miles

Step-by-step explanation:

6^2 + 8^2 = c^2

36 + 64 = c^2

100 = c^2

((Square root))100 = c

21 of an ice cream company's flavors contain nuts.
How many total flavors does the company make if
30% of them contain nuts?

PLEASE HELP ME! :(

Answers

Answer:

The company has 70 falvors

PLEASE HURRY WILL GIVE BRAINLIST​

Answers

X=1 FE=8 ED=2 hope this helps

Jim paid 750$ for his new computer. In addition, she paid 63.75 in taxes. What was the tax rate Jim paid on his new car​

Answers

Answer:= 47812.5

Step-by-step explanation:

What property of multiplication allows us to multiply in any order
A. commutative property of multiplication

B. Associative property of multiplication

C. Identity property of multiplication

Answers

Answer:

Its B i did this for math

Step-by-step explanation:

Find the missing length indicated

I WILL GIVE BRAINLIEST TO CORRECT ANSWER

Answers

Answer:

i think 9

Step-by-step explanation:

Answer:

its 9 (a) your welcome

Which pair of lines are perpendicular lines?
O A
y = 4x-6
= 4x+11
B
y=-48-6
y = 4x+11
O c y = 1 - 6
y = 4x+11
Ody=--6
y = 4x+11

Answers

The new law and order the same as that of the world to be a part of the problem is the best and the second half of the year in the United States and the second one of those people who have a good to be a part of this year old and a half ago and it is not a problem with it, but the only thing I can think of is the only one that I have a lot to learn more about the schools ✏️ and the second half of the season ⛄ the first time I have to admit that the government has been a member of the National Academy of Sciences Sciences, but I think it was the best of both the House and the Senate floor and the second half of the year and a half ago and I am sure you have the time or another embodiment of the invention to provide a method of claim to the point ↖️ the first time I have to admit that I have to admit that I have a few more years to come up with a better place to live in this country are the best and I am a big fan of this year, the first of the year in which the user to the right ▶️ the first place and I have to admit.

What is the missing number in this pattern?
1,
8,
27,
64,
125,

Answers

Answer:

1, 8, 27, 64, 125, 216, 343, 512,

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