3 years ago

8x-29 + 6x-11 + 3x-1 solve for x

Mathematics

2 answers:

brilliants [131]3 years ago

7 0

Answer:

8x-29 + 6x-11 + 3x-1=180

Answer: 180

Step-by-step explanation:

elena-s [515]3 years ago

5 0

Answer:

Step-by-step explanation:

I need help on this too.

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| 5x -2y | - | 3x | if x = -3 and y = 2

Natalka [10]

Answer:

If $x = -3$ and $y = 2$ , then $|5x-2y|-|3x| = 10$

Step-by-step explanation:

This is a problem that utilizes both substitution and the order of operations.

$|5x-2y|-|3x| = \\|-15-(2)(2)|-|(3)(-3)| =\\ |-15-4|-|(3)(-3)| =\\|-19|-|(3)(-3)| =\\19-|(3)(-3)| =\\19-|-9| =\\19-9 =\\10$

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vekshin1

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Please help

katrin2010 [14]

$\dfrac{n^2+3n+2}{n^2+6n+8}-\dfrac{2n}{n+4}\\\\=\dfrac{n^2+2n+n+2}{n^2+4n+2n+8}-\dfrac{2n}{n+4}\\\\=\dfrac{n(n+2)+1(n+2)}{n(n+4)+2(n+4)}-\dfrac{2n}{n+4}\\\\=\dfrac{(n+2)(n+1)}{(n+2)(n+4)}-\dfrac{2n}{n+4}\\\\=\dfrac{n+1}{n+4}-\dfrac{2n}{n+4}=\dfrac{n+1-2n}{n+4}=\dfrac{1-n}{n+4}$

$Answer:\ \boxed{B.\ \dfrac{1-n}{n+4}}$

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3 years ago

If the average of x, y, and z is 32 and the average of y and z is 27, what is the average of x and 2x?

Orlov [11]

X + y + z = 32 * 3
27 + 27 + x = 96
X = 54
2x = 108
Average of x and 2x = (54+108) / 2 = 164 / 2 = 82
Average of X and 2X = 82

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3 years ago

What is the area of triangle GHJ

EastWind [94]

A = 1/2 bh = 1/2 (3)(4) = 12/2 = 6

answer is B. 6 square units

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3 years ago