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Amanda [17]
3 years ago
10

Solve the equation. |x + 7|= 12

Mathematics
2 answers:
qaws [65]3 years ago
7 0
X+7=12
x=5
x+7=-12
x=-19
hope this helps!
grandymaker [24]3 years ago
7 0

If |x + 7| = 12

That means x + 7 either equals 12 or -12. So, you solve for both cases.

x + 7 = 12

Subtract 7 from both sides.

x = 5

---

x + 7 = -12

Subtract 7 from both sides.

x = -19

So, x can be 5 or -19.

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Answer:

Option D is the correct answer.

Step-by-step explanation:

Initial height = 4 feet

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Let the rate of growing each year be g.

After 6 years height of tree = 4 + 6g

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At the end of the 6th year, the tree was 1/5th taller than it was at the end of the 4th year.

That is

                4+6g=4+4g+\frac{4+4g}{5}\\\\4+6g=\frac{20+20g+4+4g}{5}\\\\20+30g=24+24g\\\\6g=4\\\\g=\frac{2}{3}ft/year

Option D is the correct answer.    

8 0
3 years ago
Use signed numbers to solve. A helicopter descended 1200 feet, rose 800 feet, and then descended 450 feet. What was the net gain
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Finally the helicopter descended by 450 feet. So the change in altitude will be -450 feet.

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A department​ store, on​ average, has daily sales of ​$28 comma 286.28. The standard deviation of sales is ​$1 comma 500. On​ Tu
wolverine [178]

Answer:

z-score = 4.43,

It is a Good day

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The provided information is:

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