My son is 10 and in 4th grade. He has a sheet that says using multiplication to divide. The division problem is 260÷4 which equals 65. How would i solve the multiplication portion of this and also add partial products.

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Convert (-3,0) to polar form. a. (3,0’) b. (-3,180’) c. (3,180’) d. (3,360’)

Which expression is equivalent to -12(3x-3/4)