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Rashid [163]
2 years ago
7

Complete the mapping of the vertices of ΔDEF.

Mathematics
2 answers:
Pepsi [2]2 years ago
6 0

Answer:

D  I think

Step-by-step explanation:

GH=5  5; <H = 90  

bekas [8.4K]2 years ago
3 0

Answer:

Here are the answers

Step-by-step explanation:

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PLZ HELP! A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a tr
Kruka [31]

Answer:

3.8

Step-by-step explanation:

A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains.

If a trip of 300 miles took 3 hour and 48 minutes, how much of it was through the mountains?

Let d = distance traveled at 37.5 (thru the mountains)

then

(300-d) = distance traveled at 90 mph

Write a time equation, time = dist/speed

change 3 hr 48 min to hrs: 3 + 48/60 = 3.8 hrs

plain time + mountain time = 3.8 hrs

%28300-d%29%2F90 + d%2F37.5 = 3.8

Multiply 90*37.5

3375*%28300-d%29%2F90 + 3375*d%2F37.5 = 3.8(3375)

cancel the denominator

37.5(300-d) + 90d = 12825

11250 - 37.5d + 90d = 12825

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-----------------

total time: 3.8 hrs

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