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olga2289 [7]
3 years ago
9

Desrina travels 70 miles at an average speed of 70 mph.

Mathematics
2 answers:
Marizza181 [45]3 years ago
7 0

Total miles = 70 + 70 = 140 miles

Total time = 140 miles / 57 mph = 2.456 hours

Time 1: 70 miles / 70 mph = 1 hour

Time 2:  70 miles / x mph

Total time = time 1  + time 2:

2.456 = 1 hour + 70/x

Subtract 1 hour from both sides:

1.456 = 70x

multiply both sides by x:

1.456x = 70

Divide both sides by 1.456:

x = 70/1.456

x = 48.0769 miles per hour

Rounded to 2 dp = 48.08 miles per hour

JulijaS [17]3 years ago
3 0

Answer:

its 48.07

Step-by-step explanation:

be smart

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Using the side-splitter theorem, the segment length that would complete the proportion is GJ.

<h3>How to illustrate the information?</h3>

It should be noted that the side splitter theorem states that when a line intersects two sides of a triangle and is also parallel to the third side, then it'll divide the sides proportionally.

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