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Goryan [66]
3 years ago
12

The distance between two cities is 1900 km. How long will it take, in h, to drive from one city to the other if your average spe

ed is 84 mi/h?
Mathematics
1 answer:
OLEGan [10]3 years ago
3 0

Answer: 14 hours

Step-by-step explanation:

from the formular;

speed = distance / time

time = distance / speed

distance = 1900km

speed = 84 mi/h

we have to change this to km/h since our distance is in km

1 mile = 1. 609km

84mile = x

cross multiply

x = 84 × 1. 609

x = 135. 156km

speed = 135. 156km/h

Time = distance / speed

time= 1900 / 135. 166

time = 14. 058

time = 14 hours approximately

Therefore it takes 14 hours to drive from one city to the other.

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Sqrt14 = 3.74165
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AlladinOne [14]

Write the equation of a line that is parallel to y=-5/4x + 7

Any line parallel to the given line will have the same slope. In an equation presented in the y-intercept form, the slope is always the coefficient of "x". In this case, the slope is -5/4 (meaning the next point is down 5, and 4 to the right).


Our equation so far looks like this: y = -5/4x + b

"b" represents the y-intercept. To solve for be, we will need to substitute values into x and y. The next piece of information it gives us is one of the points, or solutions, of the line. This means that since this point is on the line, we can use its x and y values to substitute.


x = -4

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Final Answer: y = -(5/4)x -4

7 0
3 years ago
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Mandarinka [93]
Answer: D:{8,-6,2,0}: R:{5,-9,5,-8}

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