Roger read 4 more books in july then he did in january how many books did he read in july

january he read 9
he read 4 more in july

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b