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True [87]
2 years ago
7

What is the solution for r in the equation? 0.4r − 0.13 − 0.7r = 3r − 5.74

Mathematics
2 answers:
natima [27]2 years ago
8 0

Answer:

r= 1.7

Step-by-step explanation:

Inga [223]2 years ago
5 0

Answer:

-0.3r-0.13=3r-5.74

-3.3r=-5.61

r=-5.61/-3.3

r=1.7

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2 years ago
It shipped traveled for a total of 85 miles over the course of five hours heading west the ship travels and average of 14 mph an
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complete question:

A ship traveled for a total of 85 miles over the course of 5 hours. Heading west, the ship traveled at an average speed of 14 miles per hour, and heading north, it traveled at an average speed of 19 miles per hour. For how many hours was the ship heading north?

Answer:

The ship heading north traveled for 3 hours

Step-by-step explanation:

A ship travels for a total of 85 miles over the course of 5 hours journey. The speed of the journey can be calculated below.

speed = distance/time

total distance = 85

total time = 5 hours

speed = 85/5

speed = 17  miles/hr

West direction

Heading west the ship traveled at an average speed of 14 miles per hour. The speed can be represented for this journey as follows.

speed = distance/time

14 = dist/time

let

a = time traveled west

distance = 14a

North direction

speed = dist/time

19 = dist/time

time travel north = 5 - a

distance = 19(5 - a)

distance = 95 - 19a

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85 = -5a + 95

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a = -10/-5

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2 years ago
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Answer:

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Answer:

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