To decrease an amount by 70%, what single multiplier would you use? How do i work this out?

1 answer:

5 0

To decrease an amount, you would multiply it by 0.30. you multiply it by 0.30 because this gives you 30%; therefore, it has been decreased by 70%. To decrease an amount, you always times it by 0. and then whatever the remainder is. If you were decreasing 'y' by 65%, you would work it out by doing y * 0.35

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Karen has 9 feet of lace for her tablecloth. She used 3 feet of lace.

RideAnS [48]

First calculate th feet of lace she haven't used.
9 - 3 = 6 ft
now we can convert feet into yard. we can divide the amount into 3 because it says 3ft is 1yrd
6 / 3 = 2 yards

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3 years ago

Find a number C such that the polynomial p(x)= -x+4x^2+Cx^3-8x^4

Ksenya-84 [330]

Answer:

C = 2

Step-by-step explanation:

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3 years ago

When solving a system of equations, Jared found y = x + 10 for one equation and substituted x + 10 for y in the other equation.

myrzilka [38]

Both are correct they just chose a different variable to solve for first. they will both get correct answers if they do the rest correctly.

5 0

3 years ago

Read 2 more answers

What is the value of the expression shown below? 8 + (7 + 1) 2 ÷ 4 ⋅ 2

Leni [432]

The answer is 10

8+(8)2÷4·2
8+16÷4·2 4·2=8 then 16÷8
8+2=10

just use PEMDAS

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2 years ago

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OlgaM077 [116]

Answer:

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Step-by-step explanation:

Kent is making a scale model of his favorite train. The actual train is 12 feet long and 4 feet wide. Kent wants his model to be 6 inches in length. Which would be the width if he uses the same ratio?

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2 years ago