Whoever gets brainliest andy estimated that he would need 78 feet of lumber for a tree house project. he later found that the actual amount of lumber needed was 67 feet. what was the percent error of andy's estimation?

Plz will give brainliest

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Aflower has 26 chromosomes. to create a new flower, how many would a sperm cell have what is called?