David wants to fill his backyard swimming pool. his garden hose delivers 40 gallons in 5 minutes. how many gallons of water will be in the pool after 20 minutes? after 1 hour? explian

40 gallons /  5 minutes =  X gallons / 20 minutes:

Cross multiply:

40 * 20 = 5 *x

800 = 5x

Divide both sides by 5:

x = 800/5

x = 160 gallons after 20 minutes.

There are 3 20 minute periods in an hour

160 x 3 = 480 gallons in one hour.

60.9774

step-by-step explanation:

because when you add 47.6 plus 7.32 equals 54.92

and when you add .0574 + 6= 6.0574

and when you add 54.92 and 6.0574 you get the answer of 60.9774.

plzz mark brainlest last one got deleted. cause i didn't explain it but i did but i understand what the mod meant

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.