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Len [333]
3 years ago
7

What is -7 to the second power

Mathematics
2 answers:
Paha777 [63]3 years ago
8 0

Answer:

+49

Step-by-step explanation:

-7 x -7 = +49 because the negatives cancel out, resulting in a positive

valkas [14]3 years ago
3 0

Answer:

49

Step-by-step explanation:

-7 multiplied by -7 would be 49

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3. Multiply the polynomials (a^2 + 3a – 4) and (2a^2 – a + 5). Simplify the answer. Show your work.
Elza [17]

Answer:

2a^4+5a^3-6a^2+19a-20

Step-by-step explanation:

(a^2+3a-4)(2a^2-a+5)

2a^4-a^3+5a^2+6a^3-3a^2+15a-8a^2+4a-20

2a^4-a^3+6a^3+5a^2-3a^2-8a^2+15a+4a-20

2a^4+5a^3+2a^2-8a^2+19a-20

2a^4+5a^3-6a^2+19a-20

8 0
3 years ago
How to solve #4 and #5
MArishka [77]
If SU bisects TSV, then TSU = USV
4y + 11 = 6y + 5
6y - 4y = 11 - 5 = 6
y = 6/2 = 3

Therefore, m<TSU = 4(3) + 11 = 12 + 11 = 23
7 0
3 years ago
16) Which of the following best represents the
Nostrana [21]
I think it is B because it has a continuous line soy it couldn’t be a. It has negative numbers so it couldn’t be D. And it has negative numbers so couldn’t be C
4 0
3 years ago
Solve for x..........
-BARSIC- [3]

9514 1404 393

Answer:

  x = -9

Step-by-step explanation:

Segment NL is twice the length of midsegment WV.

  2WV = NL

  2(x+15) = x+21

  2x +30 = x +21 . . . . simplify

  x = -9 . . . . . . . . . . . . add -30-x

_____

<em>Additional comment</em>

This value of x means the other segments are ...

  MN = 12

  WV = 6

  NL = 12

5 0
2 years ago
What is one tenth of two hundred
matrenka [14]
First you have to convert 1/10 into a decimal:
1/10= 0.1
Multiply 0.1 by 200:
0.1x200=20
So, 20 is 1/10 of 200.
6 0
3 years ago
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