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kenny6666 [7]
3 years ago
11

ESAY MATH PLS HELP is this sss,sa,aa,or none

Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
4 0

Answer:

SAS

Step-by-step explanation:

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Which expression or value is equivalent to (−3+5i)(−3−5i)?
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Answer:

9-25i is equivalent to (−3+5i)(−3−5i)

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Solve the system of equations x+y=-8 and -9x-6y=60 by combining the equations
TiliK225 [7]

Answer:

x = - 4    y = - 4

Step-by-step explanation:

x+y= - 8

-9x-6y=60

First, solve for x in the first equation:

x+y = - 8       Subtract y from both sides

x + y - y = -8 - y    y cancels on the left

x = - 8 - y

Now plug in what you found for x into the 2nd equation and solve for y.

- 9x - 6y = 60

-9(- 8 - y) - 6y = 60   Multiply out

72 + 9y - 6y = 60

72 + 3y = 60  Subtract 72 from both sides

72 - 72 + 3y = 60 - 72    72 cancels on the left

3y = - 12     Divie both sides by 3

3y/3 = -12/3     3 cancels on the left because 3/3 = 1

y = -4

Now plug your answer for y back into the first equation to get x.

x + y = -8

x + (-4) = - 8  Add 4 to each side

x - 4 + 4 = - 8 + 4   4 cancels on the left

x = -4

x = - 4 and y = - 4

8 0
3 years ago
Jill walked 6 blocks. This was 25% of her walk. How far was Jill's walk? A. 14 blocks B. 30 blocks C. 12 blocks D. 24 blocks
Gnoma [55]
6 is a quarter of her walk ... there are 4 quarters in a whole (6x4) = 24
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3 years ago
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Which operation is NOT closed for polynomials?
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Answer:

  • Option D

Step-by-step explanation:

When you add, multiply or subtract polynomials, the operation results in another polynomial.

When dividing polynomials, the operation may not result in another polynomial. In this case you normally end up with rational expression in the fraction form.

This operation is said not closed.

In our case this is option D.

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2 years ago
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The answer for this question is 88mm2
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2 years ago
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