Can someone explain how b1/4 x b1/2 ended up as b3/4. i can't understand how they got to that point and all of my other answers have been wrong because i don't know how to properly solve it.

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is

Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?

What effect would doubling all the dimensions of a triangular pyramid have on the volume of the pyramid? explain your reasoning.