Rachel ate 1 4/6 brownies, and brandy ate 6/7 of a brownie. how many brownies did they eat altogether?​

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

Meg constructed triangle poq and then used a compass and straightedge to accurately construct line segment os, as shown in the figure below, which could be the measures of angles pos and angle poq?