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Krissa exercises daily by walking. She aims to walk at a steady rate of 3.4 miles per hour.


a. If t represents time in hours and d represents distance in miles, write an equation that models the relationship between these variables.



b. Use your equation to calculate the distance Krissa will jog in 5/8 of an hour (round to the hundredths).



c. Use your equation to calculate how long it will take for Krissa to walk 5.44 miles.

Respuesta :

Answer:

a. 3.4t (miles)

b. 2.125 miles

c. t = 1.6 hours

Step-by-step explanation:

A) We use this relation: Distance = time * speed ( speed or vitesse or rate)

So d= 3.4*t= 3.4t (miles)

B) If t= 5/8

then the distance d= 3.4* 5/8= 2.125 miles.

C) If the distance d= 5.44, we can find the time like:

d= 3.4*t, and we know d=5.44

so 5.44= 3.4*t or t = 5.44/3.4, t= 1.6 hours

Hope you understand it.

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