The measure of an angle is 51°. what is the measure of its complement? 39°
49°
129°
139°

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?