Make x the subject of the formula- y = (4x+7)/5

Multiply. (9x3 + 4) (6x2 + 7x + 5) (9x3 + 4) (6x2 + 7x +5) = O (Simplify your answer.)

A football is kicked vertically upward from a height of 7 feet with an initial speed of 65 feet per second. The formula h=7+65t−16t2 describes the​ ball's height above the​ ground, h, in​ feet, t seconds after it was kicked. Use this formula to find the​ ball's height 4 seconds after it was kicked.

Fred flops into a pool from a platform 18.75 feet above water. His height above the water in feet x seconds into the flop is given by the expression – 5(x – .5)² + 20. How long will it take Fred to hit the water? (Hint: set the equation equal to 18.75 and solve the equation). seconds

When you had moved the 2400 from the right side of the equation to the left side so that your equation can be equaled to zero. Why did you not change the sign? Meaning are you suppose to subtract 2400 from both sides?

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6x + 2y = 8 %3D

A circular field has an area of 9 −x2. There are two rectangular fountains, x by 4x and 2x by 3x inthe courtyard. Find the expression for the green lawn area.

Simplify: 5x2 – x + 9 = [?] %3D x-3 Enter

The total amount of money​ (in cents) of x dimes and (x+7) nickels.