Solve for b.

r = x(a + b)

b = (r-a)/x
b = (a-rx)/x
b = (r-ax)/x

Evaluate the integral. (sec2(t) i t(t2 1)8 j t7 ln(t) k) dt

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =