Suppose ab and cd are rational numbers. is a(c+d)bd a rational number? explain your answer. a. no; the denominator could be 0, so the result may not be rational b. yes; the product, sum, and quotient of rational numbers is always rational, and the denominator is non-zero c. no; a quotient of rational numbers is not always rational d. there is not enough information

Noor brought 21 sheets of stickers. she gave 1/3 of a sheet to each of the 45 students at recess. she wants to give teachers 1 1/2 sheets each.

Aroulette wheel has 38 slots in which the ball can land. two of the slots are green, 18 are red, and 18 are black. the ball is equally likely to land in any slot. the roulette wheel is going to be spun twice, and the outcomes of the two spins are independent.the probability that it lands one time on red and another time on black in any order is(a) 0.5 (b) 0.25 (c) 0.4488 (d) 0.2244

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30