Solve with elimination:
10a + 4b = 18
7a + 14 = b
solve for b

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.