A student uses a solution that contains 15 grams of water to conduct an evaporation experiment. At the end of one hour, the amount of water in the solution has decreased by 2.5%. At the end of two hours, the amount of water in the solution has decreased by another 5.25%. Which calculations can be used to determine the amount of water, in grams, remaining in the solution at the end of the second hour?

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

x=6 and x=3

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35x 3= 105

step-by-step explanation:

35+35= 70   70 + 35= 105