What is 3 times the sum of c and r

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

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36

Do,h = (7, 9) (14, 18) the scale factor is