Help with this math question???

h = -4.8t² + 43.2t

t=4.5+0.20412414√486−5h

t=4.5−0.20412414√486−5h

Sorry if this is wrong.

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it