3 years ago

B oooooooooooooooooo

Mathematics

1 answer:

Andrej [43]3 years ago

3 0

Answer:

Please stop with this unless its for math. Others need more help :)

Step-by-step explanation:

Unless this was a real math problem please tell me <u>otherwise. </u>

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Simplify these expressions.<br> a. 4x + 7x + (–x)<br> b. –5yz + yz + 2yz

salantis [7]

Answer:A. 10x. B. -2yz

Step-by-step explanation:

A. 4x+7x=11x

11x+(-x) = 11x-1x=10x

B. -5yz+yz=-4yz

-4yz+2yz=-2yz

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A portable CD player costs $48. How much is a payment of 25% of the cost

levacccp [35]

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3 years ago

Simplify the number using the imaginary unit i.

BARSIC [14]

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Step-by-step explanation:

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2 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).

7 0

3 years ago

B oooooooooooooooooo​

B oooooooooooooooooo