15 points answer asap. no guessing multiply. (9×105)⋅(9×107) (a) 8.1×1012(b) 9×1012 (c) 8.1×1013 (d) 9×1013

In a circle, a 45° sector has an area of 32π cm2. what is the radius of this circle? 32 cm 12 cm 16 cm 8 cm

Which equation is equivalent to the given expression? -(1/2y+1/4) a. -1/4(1+2y) b. 1/4(2y-1) c. -2(1/4y-1/8) d. 2(1/8-1/4y)

Write an inequality for this sentence the quotient of a number and -5 increased by 4 is at most 8