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3 years ago

20 POINTS!!! NEED ALL 4 ANSWERED!!!

Mathematics

1 answer:

TEA [102]3 years ago

3 0

Answer:

1. x = 10 2. x = 7 3. x = 1 4. x = 6

Explanation:

1. -2x + 81 = 61 (Subtract 81 from 61)

-2x = -20 (Divide)

x = 10

2. 9x - 58 = 5 (Add 58 to 5)

9x = 63 (Divide)

x = 7

3. 21 +10x = 3x + 28 (Rearrange expression)

21 - 28 = 3x - 10x (Combine like terms)

-7 = -7x (Divide)

x = 1

4. 9x - 42 = 2x (Rearrange)

9x - 2x = 42 (Combine like terms)

7x = 42 (Divide)

x = 6

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2 years ago

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4 years ago

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3 years ago

The number line shows the change in temperature from 7:00 a.M. To 1:00 p.M. Which expression shows how to find the difference be

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Answer:

Step-by-step explanation:

The options in the question and the number line are shown in the image attached.

From the options, it is clear that the difference between the temperatures at 7:00 a.M. and 1:00 p.M is;

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3 years ago

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3 years ago