The strength of a beam varies inversely with the square of its length. If a 10-foot beam can support 500 pounds, how many pounds can a 9-foot beam support? Round the answer to the nearest pound.

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

If a is a nonzero real number then the reciprocal of a is

Money off coupons have been circulated to 300 households. only 2/5 of these were redeemed (used) in the local supermarket to get a free shampoo. what fraction of coupons were unused? (ps: write how you got the answer)