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Shalnov [3]
3 years ago
12

What is #3 step by step?

Mathematics
1 answer:
denis-greek [22]3 years ago
5 0
When there is a minus before a parenthesis, you must change the sign of the number(s) inside the parenthesis.

(-9) - (-7) × [2 - (-9)]^2 + (-7)

-9 + 7 × [2 + 9]^2 - 7

- 9 + 7 * (11)^2 - 7

-9 + 7*121 - 7

-9 + 847 - 7

831
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For every 3 dogs Carol has, she keeps 12 treats. Which is the correct rate?
Tems11 [23]

Answer:

4 treats per dog.

Step-by-step explanation:

Find the rate that she keeps for one dog. As it gives you the rate for 3 dogs, simply divide 3:

(3 dogs/12 treats)/(3/3) = (1 dog/4 treats).

Carol keeps 4 treats for every dog she has.

~

3 0
3 years ago
2(3x + 5) = 22 <br> what is X?
grandymaker [24]
First divide both sides by 2 so that we can get rid of the parentheses, so we get
(3x + 5) = 11
now subtract 5 from both sides
3x = 6
then finally we want x alone so we'll divide both sides by 3 and get our final answer!
x = 2
7 0
3 years ago
Read 2 more answers
14&gt;-2(2z+3)<br>please help me!!
Veseljchak [2.6K]

Answer:

14 > -2 (2z + 3)

First you need to distribute the -2 inside the parentheses.

14 > -2(2z) + -2(3)

14 > -4z - 6              -Add 6 to both sides of the equation

14 + 6 > -4z - 6 + 6

20 > -4z              -Now divide by -4 on both sides

20 / -4 > -4z / -4

-5 > z

However, when you divide by a negative number, you MUST flip the sign.

So, the answer is:

-5 < z

Hope this helps!


6 0
3 years ago
12m2 + 5n2 + 3n and 10m2 + 3n2 + 12n<br><br> please help me quick
Luden [163]
Equations : Tiger Algebra gives you not only the answers, but also the complete step by step method for solving your equations 12n^2+5n-2 so that you ...
5 0
2 years ago
What is the Slope of the line passing through the points (0,4) and (-8, -1
Contact [7]
Slope = (y2 - y1) / (x2 - x1)
(0,4)...x1 = 0 and y1 = 4
(-8,-1)...x2 = -8 and y2 = -1
now we sub and solve
slope = (-1 - 4) / (-8 - 0) = -5/-8 = 5/8 <=

3 0
3 years ago
Read 2 more answers
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