This is so hard ... what's 1+1 ?

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.

Bill and felicia each bake cookies for a party. bill bakes 3 times as many cookies as felicia. felicia bakes 24 fewer cookies than bill. bill bakes b cookies and felicia bakes f cookies. what equation can represent this word problem

Find the scale factor and ratio of perimeters for a pair of similar trapezoids with areas 49 cm squared and 36 cm squared.