19. An engine has enough fuel to operate at full power for 20 minutes. For how long could the engine operate at 35% of full power?

57.1428 minutes

Step-by-step explanation:

Power : Time

100 : 20

35 : x

if POWER increase then TIME decrease, it means both are inversely proportional to each other

x/20 = 100/35

x = (100/35) * 20

x = 400 / 7

x = 57.1428

where x is basically the time in minutes, So time = 57.1428 minutes

for 5 minutes

Explanation:

35%/ 100 20 times 5 is 100. so I thought it would be 5

answer is more than one

step-by-step explanation:

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length