Estimate the sum by rounding each number to the nearest half or whole. 4 11/12 + 3 1/2 7 1/2 8 9 8 1/2

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.

Qrst is a parallelogram. determine the measure of ∠q pls