A boat whose speed in 15km/hr in still water goes 30 km downstream and come back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is

Sketch the graph of the parabola. Find the coordinates of the vertex. y = - x^2 + 4x - 10 Use the graphing tool on the right to graph the parabola. Click to enlarge graph The vertex is (,)

Ann has to make payments twice a year on her health insurance. If each payment is $2,316, how much money should she budget for health insurance each month? A. $579B. $386C. $1,158D. $193

Jim has 8 hats and 6 pairs of shoes. How many different outfits can Jim choose with a hat and a pair of shoes?

A standard 52 card deck of cards is shuffled and then a 12-card hand is dealt from the deck. How many different outcomes are possible that have exactly 3 pairs, and all other cards of different denominations?

How many length 6 passwords with 1 number 1 upper and 1 lower?

Which of the following expressions is a polynomial? A. f (x) = 4/x-11x^2 B. 4x^3-13x^2+5x C. 5x^3+7x^4-1/2x D. - 3x^4+8x^2-2√x+1 ... ?

Suppose y varies directly as x. If y=5 when x=8, then which of the following is y when x=64?

White the of fractions as a pair of fractions with a common denominator 3/5 and 3/4

Find the solution of the system of equations. -8x + 15y = - 28 2x + 5y = - 28

How to graph y is less than or equal to - 0.7x+9