Of the 180 days of school last year, grace was absent 15 days. what percent of the days was she absent?

We need to set up the problem this way...

15/180 = x/100

Cross multiply...

15 times 100 = 180x

8.33 percent

Check this by multiplying .0833 x 180 = 15 days absent

0lz try yourself sorry for not answering

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