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Archy [21]
2 years ago
13

GIVING BRAINLIEST!!!

Mathematics
1 answer:
Blababa [14]2 years ago
7 0

Answer:

a) -4

b) 2

Step-by-step explanation:

a) f(-2) = 3*-2 + 2 = -4

b) f(x) = 8

3x + 2 = 8

3x = 8 -2

3x = 6

x = 6/3

x = 2

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8% of a number is 20
Gnoma [55]
To find what the number is, we need to set up proportional fractions.
Currently, we have 8% of a number is 20.
To set up our fractions, put 100% under 8% as a fraction first.

It should look like this: 8/100 (hint: per-cent means per-hundred).

Now, we have 20 out of a number, x. This is because we are claiming that 20 is 8% of a number (if we just reword the question without changing the concept).
It should look like this: 20/x.

Our proportional fractions are:
20/x = 8/100.

To solve for this, we need to cross-multiply the denominator of 8/100 (bottom number, 100) with the numerator of 20/x (top number, 20).

This product equation should look like this:
20 x 100 (when simplified, we get 2000).

Now, we need to cross multiply the numerator of 8/100 (top number, 8) with the denominator of 20/x (bottom number, x).

This product equation should look like this:
8x.

Now that we've cross-multiplied, set our two products as an equation.

8x = 2000.

To solve for x, divide both sides by 8 (remember, what you do to one side of an equation, you must do it to the other).

8x / 8 = x
2000 / 8 = 250.

x = 250

Your final answer is:

8% of 250 is 20.

I hope this helps!
3 0
3 years ago
Read 2 more answers
Write 96% as a fraction.
RoseWind [281]

Answer:

Directly, it would be 96/100. However,  we can reduce it to become 48/50 = <u>24/25.</u>

(underlined is simplest answer)

6 0
3 years ago
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How to solve negative exponents? (Extended,long)
defon
Easily, you write the inverse of it without a minus
so if you were to find x^(-2) it would be (1/x)^2
The rest is all the same
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3 years ago
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Answer:

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Step-by-step explanation:

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Oh for the love of noodles, please help me T-T
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I would say C hope I’m not to late :’)
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