Which expression is equivalent to 3 x 7/10

Aconvex octagon has interior angles that measures 73 degrees, 172 degrees, 132 degrees, 59 degrees, 154 degrees, 163 degrees, x degrees, 2x degrees find the value of the missing angles

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

*segment an is an altitude of right ? abc with a right angle at a. if ab = 2root 5 in and nc = 1 in, find bn, an, ac.