The area a equals pi R squared of a circular water ripple changes with the radius. At what rate does the area change with respect to the radius when r equals 4

What is the geometric mean of 6 and 13

63 = 5y + 13 Solve for y.

Van was asked to add 46 to 37 and round the result to the nearest ten. He figured that since he was going to have to round anyway, he might as well do it before adding the numbers. He rounded 46 to 50 and 37 to 40, thus getting an answer of 50+40=90.

Factorise xsquared+13x+12

Find the slope and y-intercept of 2y+5x-8=0

Determine the y-intercept for 3x + 2y = 14. A) (0, 2) B) (0, 7) C) (2, 0) D) (7, 0)

Give a recursive algorithm matrix-chain-multiply (a, s, i, j) that actually performs the optimal matrix-chain multiplication for a chain of matrices

Solve the equation. - 49f=-3 f=

Let $b$ and $c$ be constants such that the quadratic $-2x^2 + bx + c$ has roots $3+/sqrt{5}$ and $3-/sqrt{5}$. Find the vertex of the graph of the equation $y=-2x^2 + bx + c$.

Jackson earned $60 and put 1 5 of those earnings into his savings account. How much did he put into his savings account?