Can anyone do it? plz

Step-by-step explanation:

80 + x + 51 + 60 = 180

x = 180 - 80 - 51 - 60

substitute x=-11 back into the eq.

80 + x + 51 + 60 = 180

80 - 11 + 51 + 60 = 180

180 = 180  OK

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.

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2