Express the sum of each pair of numbers as a product of the greatest common factor of the numbers and another sum.
9. 42+105 10. 54+90

Volume of a cylinder with a radius of 13 in and height of 30 in

What is the first step of an indirect proof of a number that is divisible by two

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).