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tekilochka [14]
3 years ago
14

e="Expand $(a + 2)(3a^2 + 12)(a - 2).$" alt="Expand $(a + 2)(3a^2 + 12)(a - 2).$" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
sashaice [31]3 years ago
5 0

Answer:

3a^{4} - 48

Step-by-step explanation:

Given

(a + 2)(3a² + 12)(a - 2)

= (a + 2)(a - 2)(3a² + 12) ← expand the first pair of parenthesis using FOIL

=(a² - 4)(3a² + 12) ← expand using FOIL

= 3a^{4} + 12a² - 12a² - 48 ← collect like terms

= 3a^{4} - 48

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Write the following proportion:<br> 8 is to 64 as 2 is to X
Andrews [41]
1 way
\frac{8}{64}  =  \frac{2}{x}  \\  \\ &#10; \frac{8:4}{64:4}  =  \frac{2}{x}  \\  \\ &#10; \frac{2}{16}  =  \frac{2}{x}    ⇔  x = 16
......................................................
2.way
\frac{8}{64}  =  \frac{2}{x}
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8x = 2 * 64&#10;8x = 128&#10;x = 16
3 0
3 years ago
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8 to the power of 8 times 5 to the power of 8 simplify the expression
qwelly [4]
40 to the power of 8
4 0
3 years ago
subset to real numbers, and as you can see are not at all connected to the rest of numbers (and integers).
Natali5045456 [20]

Irrational numbers are the subset of real numbers that are not at all connected to the rest of numbers.

The subsets of real numbers are natural numbers, whole numbers, integers, rational numbers and irrational numbers.

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For example:-

1 is a natural number, whole number, integer, rational number but not irrational number. On the other hand, \sqrt{2} is an irrational number but none of the rest.

To learn more about real numbers, here:-

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6 0
2 years ago
I need to finish this, can someone please help!
taurus [48]

Answer:

13

Step-by-step explanation:

a parallelogram has sides that are parallel to the opposite side. This means that y + 7 is going to be parallel to 20.

Two opposing sides of a parallelogram are parallel and equal

You know that the length of both of the sides is equivalent because the other set of opposing lines is also parallel (you can think of it as cutting off the line segment of y+7 and 20 at the same length. )

this means that we can set up the equation to find y as:

y + 7 = 20

then, you can proceed to find y by isolating it:

y + 7 = 20 ; so therefore

y + 7    =    20

   - 7           -7

y           =     13

y = 13

So, the value of y is 13

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2 years ago
Rick is a salesman whose base monthly salary is $2,200. He earns 5% commission on total sales. Last month his total earnings wer
Masteriza [31]
A Because if you subtract his monthly salary and his amount paid then multiply the amount of 5% by the extra not excluding his monthly salary you get 6500$<span />
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3 years ago
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