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gregori [183]
3 years ago
8

Evaluate the following expression. 2-²

Mathematics
2 answers:
bonufazy [111]3 years ago
6 0
The answer should be 1/4 :)
Olin [163]3 years ago
3 0
2^{-2} = 1/2^{2} = 1/4
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3 years ago
Use this system of equations to answer the questions
Over [174]

Answer:

1. To eliminate x-term, multiply the second by -2

2. To eliminate y-term, multiply the second by 3

Step-by-step explanation:

4x - 9y = 7 (1)

-2x + 3y = 4 (2)

1. To eliminate x-term, multiply the second by -2

-2x + 3y = 4 (2) × 2

-4x + 6y = 8 (3)

4x - 9y = 7 (1)

Add (3) and (1)

6y - 9y = 8 + 7

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y = 15/-3

y = -5

4x - 9y = 7 (1)

4x - 9(-5) = 7

4x + 45 = 7

4x = 7 - 45

4x = -38

x = -38/4

x = -9.5

4x - 9y = 7 (1)

-2x + 3y = 4 (2)

2. To eliminate y-term, multiply the second by 3

-2x + 3y = 4 (2) × 3

-6x + 9y = 12 (3)

4x - 9y = 7 (1)

-6x + 4x = 12 + 7

-2x = 19

x = 19/-2

x = -9.5

4x - 9y = 7 (1)

4(-9.5) - 9y = 7

-38 - 9y = 7

-38 - 7 = 9y

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y = -45/9

y = -5

6 0
2 years ago
Read 2 more answers
Pleaseee help me answer this ASAP
Norma-Jean [14]

Answer:

C.

Step-by-step explanation:

Hope this Helps you !

7 0
3 years ago
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