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dsp73
4 years ago
6

Solve the absolute value 3[z+7]=-12

Mathematics
2 answers:
Novay_Z [31]4 years ago
5 0
3|z+7|=-12\\|z+7|=-4\\\\z+7=-4\\z+7=4\\\\z=-11\\z=-3\\\\\\\sf{Plug~them~to~test~if~the~solution~is~correct.}\\\\ 3|-3+7|=-12 \\ 3 (4)\neq -12 \\  \\ 3
|-11+7|=-12\\ 3 (4)\neq-12 \\  \\  \\ \boxed{\sf{There~is~no~solution.}}
alexandr402 [8]4 years ago
3 0
Two is the answer because 3+2=5+7=12.So the missing number is 2.
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Need help please asp thank you so much
Aneli [31]

Answer:

x = -1, 3

Step-by-step explanation:

so what you need to do is graph each one because that's what the questions ask. One way for you to check your answer is to set the two equations equal to each other.

-x + 5 = x^2 - 3x + 2

you want to end up with one equation and having the equation equal 0. So add x to both sides to cancel out the x on the left side and then subtract 5 from both sides to cancel out the 5 on the left side.

0 = x^2 - 2x - 3

now you factor

0 = (x - 3) (x + 1)

x = -1, 3

3 0
4 years ago
X/2 + 7 = 11 What is x?
insens350 [35]
The answer to <span>X/2 + 7 = 11 What is x is x=8</span>
5 0
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viva [34]
The addition property of equality tells us that adding the same number to each side of an equation gives us an equivalent equation

Hope this helps!
5 0
3 years ago
Make x the subject of the formula y=7x+4
Sergio039 [100]

Answer:

x = (y - 4)/7

Step-by-step explanation:

Subtract 4 from both sides to get:

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Then, divide both sides by 7 to get:

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