MATHEMATICS MIDDLE SCHOOL

Evaluate: x = y² if x = 8 and y = 3
A. 2
B. 509
C. 25
D. -1

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Answers

Answer 1
Answer:

Answer:

d I think but dont quote me

Step-by-step explanation:

idk I just guessed

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The price of a t-shirt was reduced from $18.00 to $13.00. Find the percent of the discount.

Answers

1st find discount
18-13=5
5 is discount

discount from original
5/18=x%
percent means parts out of 100 so x%=x/100
5/18=x/100
multiply both sides by 900
250x=9
divide both sides by 250
x=27.77777
aprox 28%

answer is 28%

35 girls and boys went walking. The ratio is 5 girls to every 2 boys. How many boys are there?

Answers

Set up a proportion:

In a sample of 5:2, you have 7 kids in all.

So the the ratio of boys to kids in a sample of 7 is 2:7.

So set up a proportion:

(2)/(7) = (X)/(35)

7x =70

X = 10

Therefore, 10 of the boys went walking.
5x-\ girls\n\n2x-\ boys\n\n5x+2x=35\n\n7x=35\ \ \ | divide\ by\ 7\n\nx=5\n\nThere\ are\ 10\ boys.

A length of string 1 yard long is formed into a square. How many inches long is each side of the square?

Answers

ok, the first thing we have to do is find out how many inches are in a yard.

12 feet times 12 inches is 144 inches in a yard

then divide that by 4 because there are 4 sides to a square.

144/4=36

each sideis 36 inches long

The surface area of a triangular prism is 60 square centimeters. What is the surface area of a similar prism that is smaller by a scale factor of 1 5th

Answers

If the scale factor for linear dimensions is 1/5, the scale factor for area dimensions is (1/5)² = 1/25.

The surface area of the smaller prism is
   (60 cm²)*(1/25) = 2.4 cm²

The ratio 63:18:27 in simplest form.

Answers

63:18:27
Are all divisible by 9
63/9=7
18/9=2
27/9=3
7:2:3
the answer is 7:2:3.I really hope that I was able to help

X/-3+20=30 help me please

Answers

if you're solving for x it's -30

steps: x/-3+20=30

first subtract 20 from both sides then you'll have

x/-3=10 then multiply both sides with -3

you should have x by itself and -30 on the other side

answer x=-30

if you're solving for x it's -30


steps: x/-3+20=30


first subtract 20 from both sides then you'll have


x/-3=10 then multiply both sides with -3


you should have x by itself and -30 on the other side


answer x=-30
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