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3 years ago

Mya wants to create a rectangular garden that will be 25 feet wide. She has 110 feet of

Mathematics

1 answer:

jok3333 [9.3K]3 years ago

7 0

750 sq ft

Step-by-step explanation:

since the fencing is going around the perimeter, you have to have two sides with the width of 25 feet, you would use 50 feet of fencing for 2 of the sides. You will have 60 feet of fencing left, divided by 2 (length of the garden) = 30 feet long.

The area (length x width) or (25 x 30) = 750 sq ft of garden space. Draw a rectangle with 25 ft on two parallel sides and 30 ft on the other two sides and show these equation= 25 x 2= 50, 110 - 50 = 60

60 ÷ 2 = 30, 30 x 25 = 750

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you are taking a test worth 130 points. There are a total of 50 five-point and two-point questions. How many five-point question

REY [17]

Answer:

10 five-point questions and 40 two-point questions

Step-by-step explanation:

Let x represent the total number of five-point questions and y represent the total number of two-point questions.

Equation 1: 5x+2y=130

Equation 2: x+y=50

Multiplying Equation 2 by 2: 2x+2y=100 (Equation 3)

(Equation 1) - (Equation 3): 3x=30

x=10

Substituting x=10 into x+y=50: 10+y=50

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Therefore, there are 10 five-point questions and 40 two-point questions.

<h2><u>Check</u></h2>

Substituting x=10 and y=40 into Equation 1:

LHS=5x+2y=5(10)+2(40)=50+80=130

RHS=130

LHS=RHS

Substituting x=10 and y=40 into Equation 2:

LHS=x+y=10+40=50

RHS=50

LHS=RHS

Since in both cases the left-hand side is equal to the right-hand side, the answer is correct.

(LHS: left-hand side, RHS: right-hand side)

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3 years ago

An item is on sale for 50% off the regular price of $3.18. A customer buys one and gives the cashier $5.00. The cashier gives th

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The regular price is 3.18.
50% off half the price, so you can either divide the regular price by 2 or multiply it by 0.50

3.18 / 2 = 1.59 ( 3.18 *0.50 = 1.59)

so the sale price is 1.59

now subtract the sale price from $5 to find the amount of change they got back:

5.00 - 1.59 = $3.14 change back

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3 years ago