Chelsea can paint a fence in 9 hours, and Greg can paint the same fence in 7 hours. How long does it take them to paint the fence if they work together? Round to the nearest tenth.

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10

5x−4≥12 or 12x+5≤−4 can you with this problem