Answer:
180 divided by 45 is equal to 4km/h
u know area of rectangle is length × breadth
therefore, area = (3x+4)×(7x-2)
= 21x²-6x+28x-8
= 21x²+22x-8
= d ans
4 hours
Step-by-step explanation:
21 · y = 3 · 28
21y = 84
21y ÷ 21 = 84 ÷ 21
y = 4
$15.75
$6p-$2.25