The Wright family and the James family each used their sprinklers last summer. The water output rate for the Wright family's sprinkler was 40 L per hour. The water output rate for the James family's sprinkler was 20 L per hour. The families used their sprinklers for a combined total of 50 hours, resulting in a total
water output of 1300 L. How long was each sprinkler used?

the answer is 5/3x+7/5y+7

d

step-by-step explanation:

d

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.