Alain throws a stone off a bridge into a river below. The stone's height (in meters above the water), x seconds after Alain threw it, is modeled by: h (x) = -5x^2+10x+15 How many seconds after being thrown will the stone hit the water?

T-5=0 what is the answer

Jeff is baking a cake. The recipe says that he has to mix 32 grams of vanilla powder into the flour. Jeff knows that 1 cup of that particular vanilla powder has a mass of 128 grams. He added two over three of a cup of vanilla powder to the flour.

What is the value of the expression? -29 - (-13:35) Enter your answer, as a fraction in simplest form, in the box.

Judy can fit 24 books in her bookcase if there are only 3 shelves how many books can she fit per shelf find the u unit rate by using what you know about ratios

What happened to the size of the equal parts when there were less equal parts?

Express the area of each figure as a monomial. Solve 7x^4 if the formula is s^2.

A chess board is an 8 by 8 grid of squares. If you randomly choose 3 squares on the board, what is the probability that: a) they lie on the same line, excluding diagonal lines? b) they lie on the same line. including diagonal lines?

A marble bag contained 2 red marbles, 3 blue marbles, and 5 yellow marbles. Marco drew a blue marble and did not replace it. What is the probability of drawing a blue marble next?

An 85-foot rope from the top of a tree house to the ground forms a 45 degree angle of elevation from the ground. How high is the top of the tree house?

Find the area of an equilateral triangle with an apothem of 7