Given that a sequence is defined by the formula ar = 4•(-2)-1
find the 20th term.
3
220 = 2,097,152
220 = 4,194,304
220 =-2,097,152
220 = -4,194,304

The equation x2 – 1x – 90 = 0 has solutions {a, b}. what is a + b?

Which of the following values cannot be probabilities? 0.08, 5 divided by 3, startroot 2 endroot, negative 0.59, 1, 0, 1.44, 3 divided by 5 select all the values that cannot be probabilities. a. five thirds b. 1.44 c. 1 d. startroot 2 endroot e. three fifths f. 0.08 g. 0 h. negative 0.59

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.