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3 years ago

7

To increase an amount by 30%, what single multiplier would you use? and To decrease an amount by 30%, what single multiplier wou

ld you use?

1 answer:

Kamila [148]3 years ago

6 0

Answer:

To increase, use 1.3

to decrease, use .7

Step-by-step explanation

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Harman [31]

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2 years ago

A textbook store sold a combined total of 294 physics and psychology textbooks in a week. The number of psychology textbooks sol

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3 years ago

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lianna [129]

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3 years ago

Read 2 more answers

What is the factored form of the expression?

Georgia [21]

Answer: The answer is (d) $(4x+7)(7x+8).$

Step-by-step explanation: Given equation to be factored is

$28x^2+81x+56.$

The given expression is quadratic, so we can factor it into two linear factors, by using the following factorisation rule.

$x^2+(a+b)x+ab=(x+a)(x+b).$

So, the given equation can be factorised using the above rule. The factorisation is as follows.

$28x^2+81x+56\\\\=28x^2+49x+32x+56\\\\=7x(4x+7)+8(4x+7)\\\\=(4x+7)(7x+8).$

Thus, the correct option is (d).

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4 years ago