4 years ago

What does X equal. HELP PLEASE!!

Mathematics

1 answer:

Anton [14]4 years ago

4 0

Answer:

x=3

Step-by-step explanation:

8x-28-2x=-10

We move all terms to the left:

8x-28-2x-(-10)=0

We add all the numbers together, and all the variables

6x-18=0

We move all terms containing x to the left, all other terms to the right

6x=18

x=18/6

x=3

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X2 +10x + 21<br> I need to factor the

Ber [7]

Answer:

(x + 7)(x + 3).

Step-by-step explanation:

x^2 +10x + 21

21 = 7 * 3 and 10 = 7 +3

so the factors are

(x + 7)(x + 3).

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3 years ago

3/8 x 2/6 x 4/8 x 5/12

Evgesh-ka [11]

Answer:

$\frac{5}{192}$

Step-by-step explanation:

$\frac{3}{8} * \frac{2}{6} * \frac{4}{8} * \frac{5}{12}$

Multiply all numerators

3 * 2 * 4 * 5 = 6 * 20 = 120

Multiply all denominators

8 * 6 * 8 * 12 = 48 * 96 = 4,608

$\frac{120}{4608}$

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$\frac{5}{192}$

Hope this helps :)

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3 years ago

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Answer:

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Step-by-step explanation:

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