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Sedbober [7]
2 years ago
11

Select the correct answer.

Mathematics
2 answers:
jeyben [28]2 years ago
5 0

Answer:

A. 5x^2+12x-7

-2 + 7= 5

Sati [7]2 years ago
3 0
The answer would be A because if you combine all the like terms you will get A as a result.

-2x^2+8x-9+4x+7x^2+2
-2x^2+7x^2 combine both of these and it will get you 5x^2
And then you would do 8x+4x which would be 12x and lastly you would -9+2 which would be -7 so the answer is A.

Hope this helps!!
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6 times a number is 27 less than the square of that number. Find the positive solution.
Sedaia [141]

Answer:

9

Step-by-step explanation:

6n = n² - 27

n² - 6n - 27 = 0

n² - 9n + 3n - 27 = 0

n(n - 9) + 3(n - 9) = 0

(n - 9)(n + 3) = 0

n = -3, 9

7 0
2 years ago
.5+y-5÷34+3×7 -6 =45​
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Answer:

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Step-by-step explanation:

5+y-5/34+3*7-6=45

combine terms on each side

y/49=45

multiply 49 on each side

y=2205

i hope this helps you

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