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Over [174]
4 years ago
13

A system of equations is shown below: Equation A: 4c = d – 8 Equation B: c = 5d + 8 Which of the following steps should be perfo

rmed to eliminate variable d first?
a. Multiply equation B by 4.
b. Multiply equation A by –5.
c. Multiply equation A by 4.
d. Multiply equation B by 5.
Mathematics
2 answers:
ozzi4 years ago
8 0
You would want to multiply equation a by -5 so you can eliminate by addition
Doss [256]4 years ago
6 0
B is the correct answer... Hope I'd helped!
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aleksandr82 [10.1K]

Answer:

11

Step-by-step explanation:

Evaluate using

PEMDAS

First we do what is inside of the Parenthesis 12 - 9 = 3

Now we have 2 + 3²

Next is Exponents 3² = 9

Now we have 2 + 9

there is no multiplication or division needed so we go straight to addition

9 + 2 = 11

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3 years ago
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guapka [62]

Answer:

x = 10°

Step-by-step explanation:

Step 1:

92° + x° + 78° = 180°             Supplementary Angles

Step 2:

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Step 3:

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gulaghasi [49]

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8 0
3 years ago
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xenn [34]

Answer:

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Step-by-step explanation:

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