Question

I need help on this please asap.

Answer 1

$d=rt\\\\a.\\\\rt=d\qquad|\text{divide both sides by} r\neq0\\\\t=\dfrac{d}{r}\\\\b.\\d=300\ miles,\ r=60\ mph.\ \text{Substitute}\\\\t=\dfrac{300}{60}h=50h\\\\c.\\rt=d\qquad|\text{divide both sides by}\ t\neq0\\\\r=\dfrac{d}{t}\\\\d=250\ miles,\ t=4.5\ h.\ \text{Substitute}\\\\r=\dfrac{250}{4.5}mph=\dfrac{2500}{45}mph=55\dfrac{25}{45}mph=55\dfrac{5}{9}mph\approx55.6mph$

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