At west high school, 10% of the student population is taking a calculus course, 8% is taking a physics course, and 6% is taking both. find the probability that a student chosen at random is taking a physics course, given that the student is taking a calculus course.
a. 0.06
b. 0.60
c. 0.70
d. 0.75

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

Steve had 48 chocolates but he decided to give 8 chocolats to each of his f coworkers. how many chocolates does steve have left

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.