Kamila babysat mine times. she earned $15,$20,$10,$12'$20,$16,$80,$18 for eight babysitting jobs. how much did she earn the ninth time if the mean of the data set is $24?

the answer will be the last one

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus