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3 years ago

PlEASE ANSWER! x/3 - 4 = 5

2 answers:

8 0

First of all, x/3 means to divide.

To solve, you need to add 4 and 5 together to find what you need to subtract from 4 to get 5. The answer is 9.

You then multiply 9 by 3 to find x since you have to divide 3 by x to make the problem true.

You get 27 as x since 27 divided by 3 is 9 and 9 minus 4 is 5 so that all works out.

pshichka [43]3 years ago

6 0

3 because 5- 4 is 1 and 3/3=1

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The compliment of set A that is A' is equal to {2, 4, 8, 12, 16}.

We are given the universal set as:

U = {2, 4, 6, 8, 10, 12, 14, 16}

We are also given that set A is:

A = {6, 10, 14}

We need to find A'

For this, we will subtract set A from the universal set, U.

So, we get that:

A' = U - A

A' = {2, 4, 6, 8, 10, 12, 14, 16} - {6, 10, 14}

Solving the expression, we get that:

A' = {2, 4, 8, 12, 16}

Therefore, we get that, the compliment of set A that is A' is equal to {2, 4, 8, 12, 16}.

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A survey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand X aspirin. How many doctors use brand X aspirin

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This is a proportion problem that involves cross-multiplication
Set your problem up like so:
$\frac{x}{2,000}$ = $\frac{3}{5}$

Now cross multiply
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now you're left with 5x = 6,000
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3 years ago