1 b. A car can travel 126 miles on 7 gallons of
gasoline. How much gasoline will it need to
go 378 miles?

21 gallons

Step-by-step explanation:

We can solve this problem by ratios

126 miles      378 miles

=

7 gallons      x gallons

Using cross products

126 *x = 378 *7

126x =2646

Divide each side by 126

126x/126 = 2646/126

x =21

62.5 paisa

step-by-step explanation:

4000*70 = 280000

280000-(2000*90) = 100000

4000-2400 = 1600

100000/1600 = 62.5

( give brainliest)

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb