Place parenthesis in the following
equation to make
it true:
7+7–7 ÷7+7•7= 7

Please answer I will give you a lot of points!!

A50% increase followed by 33 1/2% decrease

Which statement is true about a number and its additive inverse? a. their product is always one. b. their sum is always one. c. they are always reciprocals of each other. d. their sum is always zero.

An engineer scale model shows a building that is 3 inches tall. if the scale is 1 inch = 600 feet, how tall is the actual building?