In May, Jenna's mean weekly salary was $78. She earned $70 in Week 1, $88 in Week 2, and $67 in Week 3. How much did Jenna earn in the last week of May?

just add then all up then divide each of them buy the answer

Step-by-step explanation:

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