2 years ago

Help with fraction proprtions

Mathematics

1 answer:

Marina86 [1]2 years ago

7 0

The first one is 100%

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Lines AB and CD (if present in the picture) are straight lines. Find x. Give reasons to justify your solutions.

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Answer:

WORDS: The value of x is 15.

EQUATION: x = 15

Step-by-step explanation:

1. AB is a straight line therefore angles AOF, FOG, and GOB total 180º

2. If ∠FOG = 90º, AOF + GOB = 90º by subtraction & substitution property

3. 5x - 15 + 2x = 90 (now solve) --> by substitution

4. 7x - 15 = 90 --> by C.L.T. or Combine Like Terms

5. 7x = 105 --> by C.L.T. or Combine Like Terms

6. x = 15 --> by inverse operations (division)

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A construction crew has just finished building a road. The crew worked for 10 days. If they built 314 kilometers of road each da

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Answer:

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Step-by-step explanation:

If they made 314 kilometers per day and they worked for 10 days, multiply:

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The total length of the road is 3,140 kilometers.

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What is the median 18 16 -14 -15 8 18 7 11 17

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Answer:

Step-by-step explanation:

-15, -15, 7, 8, 11, 16, 17, 18, 18

find the middle number after numbers are in order

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