3 years ago

Use the distributive property to remove the parentheses. -7(-3x-2u+4)

Mathematics

2 answers:

spayn [35]3 years ago

4 0

21x+14u-28would be the answer.

Vedmedyk [2.9K]3 years ago

3 0

The answer is 21x+14u+-28

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Aliun [14]

This is an exponential function.
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3 years ago

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OverLord2011 [107]

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Anuta_ua [19.1K]

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2 years ago

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3 years ago

Five years ago, Victor was twice as old as his daughter Anika. In 10 years, the sum of their ages will equal 90. Find their ages

frozen [14]

Answer: 45 and 25

Step-by-step explanation:

Given

Five years ago victor was twice as old as his daughter

Suppose the current age of victor and his daughter are x and y

For five years ago

$\Rightarrow (y-5)=2(x-5)\\\Rightarrow y-5=2x-10\\\Rightarrow y=2x-5\\\Rightarrow 2x-y=5\quad \ldots(i)$

In 10 years sum of their ages is 90

$\Rightarrow (y+10)+(x+10)=90\\\Rightarrow x+y=70\quad \ldots(ii)$

On solving (i) and (ii) we get

$\Rightarrow x=25,y=45$

So, the current age of victor is 45 and his daughter is 25

8 0

3 years ago