What is the difference in height between 30 m down a cliff and 87 m up a cliff? Use the first number given in problem to write the number sentence. Choose the correct number sentence and answer that matches this situation. A. 30 - 87 = -57 B. -30- (-87) =57 C. 30 - (-87) = 117 D. -30 - 87 = -117

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

6/20

step-by-step explanation:

49%

step-by-step explanation:

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