What does 12111/14+9*6164616175847*52/2+54445 454+111+1-451151551515*92*5*2*5-2*4 *4*4*14*14*41*41*4*14*11*41*14*1*4* 414*14*14

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints

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