Question

I need help on this please asap.

Answer 1

`d=rt\\\\a.\\\\rt=d\qquad|\text{divide both sides by} r\\eq0\\\\t=(d)/(r)\\\\b.\\d=300\ miles,\ r=60\ mph.\ \text{Substitute}\\\\t=(300)/(60)h=50h\\\\c.\\rt=d\qquad|\text{divide both sides by}\ t\\eq0\\\\r=(d)/(t)\\\\d=250\ miles,\ t=4.5\ h.\ \text{Substitute}\\\\r=(250)/(4.5)mph=(2500)/(45)mph=55(25)/(45)mph=55(5)/(9)mph\approx55.6mph`

Answer 2

d=rt

divide by r on both sides

d/r = t

300/60 =t

5=t

t=5 hours

d=rt

d/t =r

250/4.5 =r

55.5555555=r

55 5/9 miles per hour