There were 208 sixth graders who attended the school dance. If this was 65% of the whole 6th grade, how many 6th graders are there?

9

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

y-3=-3/2(x+4)

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