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nirvana33 [79]
4 years ago
9

What is an equivalent expression for 2x + 10x and 2(x-4) + x

Mathematics
1 answer:
tester [92]4 years ago
6 0
2x+10x combine like terms
12x
2(x-4)+4 Distribute 2
2x-8+4
combine like terms
2x-4
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wolverine [178]
The protractor of the radius squared is 2x the volume shown
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3 years ago
The sum of a number times 9 and 30 is at least -28
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Answer:

9n + 30 ≥ -28

Step-by-step explanation:

Let the number be n.  Then, symbolically, this statement is:

9n + 30 ≥ -28

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Barbara plotted an elevation below sea level on a number line and labeled it A. She plotted point B above 0, a distance that is
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B is twice as far away from point A as it is from point 0.
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Read 2 more answers
Suppose you are able to download 1 free song to your tablet daily and each additional download costs $0.59. If your monthly bill
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Answer:

54.

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7 0
4 years ago
HELPPP!!
sdas [7]
SOLUTION:
 

A box has a square base of side x and height y where x,y > 0.
Its volume is V = x^2y and its surface area is S = 2x^2 + 4xy.
(a) If V = x^2y = 12, then y = 12=x^2 and S(x) = 2x^2 C 4x (12=x2) = 2x2 + 48x^-1. Solve S'(x) = 4x - 48x-2 = 0 to obtain x = 12^1/3. Since S(x/) ---> infinite as x ---> 0+ and as x --->infinite, the minimum surface area is S(12^1/3) = 6 (12)^2/3 = 31.45, when x = 12^1/3 and y = 12^1/3.


(b) If S = 2x2 + 4xy = 20, then y = 5^x-1 - 1/2 x and V (x) = x^2y = 5x - 1/2x^3. Note that x must lie on the closed interval [0, square root of 10]. Solve V' (x) = 5 - 3/2 x^2 for x>0 to obtain x = square root of 30 over 3 . Since V(0) = V (square root 10) = 0 and V(square root 30 over 3) = 10 square root 30 over 9 , the maximum volume is V (square root 30 over 3) = 10/9 square root 30 = 6.086, when x = square root 30 over 3 and y = square root 30 over 3 .
5 0
3 years ago
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