When adding a positive and a negative integer, the answer will always be negative. true false?

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

Mike wants to make meatloaf. his recipe uses a total of 8 pounds of meat. if he uses a 3 to 1 ratio of beef to pork, how much pork will he use? enter your answer as a mixed number in simplest terms.