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3 years ago

Please help me solve this, I can't get a right answer even though it is easy: | 2x + 4 | = 12

1 answer:

5 0

Because the left side is eclipsed in an absolute value, we have two possible values of x, denoted by:
2x+4 = 12 and -(2x+4) = 12

Solving for both of these, we are presented with the two values of x:
x = 4 and x = -8

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vitfil [10]

The answer to your question should be b

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3 years ago

What are the values of x, y, and z?

adoni [48]

Answer:

x = 111

y = 36

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2 years ago

PLEASE HELP ANSWER THESE QUESTIONS!

Sliva [168]

Answer:

Step-by-step explanation:

a² - b² = (a+ b)(a - b)

1) (2n-4/2n) ÷ (n^2-4/n)

$=\frac{2n-4}{2n}*\frac{n}{n^{2}-4}\\\\=\frac{2n-2*2}{2n}*\frac{n}{n^{2}-2^{2}}\\\\=\frac{2*(n-2)}{2n}*\frac{n}{(n+2)*(n-2)}\\\\=\frac{1}{n+2}$

2) [y^2-36/y^2-49] ÷[ y+6/y-7]

$=\frac{y^{2}-36}{y^{2}-49}*\frac{y-7}{y+6}\\\\=\frac{y^{2}-6^{2}}{y^{2}-7^{2}}*\frac{y-7}{y+6}\\\\=\frac{(y+6)*(y-6)}{(y+7)*(y-7)}*\frac{y-7}{y+6}\\\\=\frac{y-6}{y+7}\\$

3) [m^2-1/ m^2-m] ÷ [m^2-7m-8/3m ]

$=\frac{m^{2}-1}{m^{2}-m}*\frac{3m}{m^{2}-7m-8}\\\\=\frac{(m+1)*(m-1)}{m*(m-1)}*\frac{3m}{(m-8)*(m+1)}\\\\=\frac{3}{m-8}$

Hint : m² - 7m - 8

sum = -7

Product = -8

Factor = (-8), 1

m² - 7m - 8 =m² - 8m + m - 8

= m*(m - 8) + (m-8)

= (m - 8)(m +1)

7 0

3 years ago

Enter as a integer or decimal

valentina_108 [34]

Answer:

x = - 6

Step-by-step explanation:

Given

4(x + 6) - 2x = 12 ← distribute and simplify left side

4x + 24 - 2x = 12

2x + 24 = 12 ( subtract 24 from both sides )

2x = - 12 ( divide both sides by 2 )

x = - 6

3 0

3 years ago

What is the y-intercept of f(x)=(1/4)^x<br> A. (1,0)<br> B. (1 1/14)<br> C. (0,0)<br> D. (0,1)

evablogger [386]

Answer:

Step-by-step explanation:

firstly,y-intercept, x=0,A and b wrong

sub x=0

0.25⁰=1

(0,1)

6 0

3 years ago