Technical improvement of a factory enabled it to produce 165 parts more in february than in january. in the two-month period, the factory produced 1315 parts altogether. how many parts were produced in january and how many parts were produced in february?

100 points, hi, i’m not sure how to get the equation from the graph and table.

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