An angel is 20 degrees less than the measure of its supplement . find the measure of the angle

Timed*** there are 8 rows and 8 columns, or 64 squares on a chessboard. suppose you place 1 penny on row 1 column a, 2 pennies on row 1 column b, 4 pennies on row 1 column c, and so on … how many pennies are on each square? a =   b =   c = d =   e =   f = g =   h =

Write the standard form of an equation with (see picture below)

Divide reduce the answer to lowest term 3/7 divided 1 1/6