a 700-gallon tank holds 500 gallons of liquid. three pumps feed three different ingredients into the tank at its top. A discharge pump at the base of the tank removes the mixed ingredients. the rates at which the pipes feed and remove liquid are shown to the right. let t represent the amount of time for which each pipe is operating.

0.16 or 16%

step-by-step explanation:

lets take a coin for example.

if you toss it twice, it has a 1/4 chance of landing on heads both times because 1/2 * 1/2 is 1/4.

with the cards, the chance of picking dog is 0.4. having two people pick one is like picking a card twice in a row. so 0.4 * 0.4 is 0.16, or 16%

it is x=-4

step-by-step explanation:

2

step-by-step explanation: