What number should be added to the expression x2+6x to change it into a perfect square trinomial?

A. 3

B. 6

C. 9

D. 12

A field hockey ball is launched from the ground at an angle to the horizontal. What are the ball's horizontal and vertical accelerations a) at its maximum height? b) halfway up to its maximum height? c) halfway down to the ground?

Make X the subject: a (x-y) = b (z-x)

Shock is the Best estimate of the capacity of a pitcher of water

The bases on a softball diamond are 60ft apart. How far is it from home plate to second base

What is the equivalent to 12/8

What are the coefficients, constants, factors and variables in the expression (2x + 15) (9x - 3) ?

42.5% of what is 20.57

A delivery person uses a service elevator to bring books up to an office the delivery person 160lb and each box of books weighs 60lb the maximum capacity of the elevator is 1230lb

If you flip a coin 300 times how many times would you expect the coin to lands head up? Explain your reasoning (write in complete, mathematically precise sentences).

What is 305 divided by 5 using the distributive property in division without remainders