Solve to find the values of a and b.
4a + 7b = 38
9a + 7b = 68​

Use the radius you found in part i (r=26.8 cm) with the surface area formula below to find the surface area of the sphere. show your work and round your answer to the nearest tenth. the surface area of a sphere: sa = 4πr^2 self note: 3.8.4

The heaviest 16% of all men in weight weigh more than how many pounds ?

In the 30-60-90 triangle below side s has a length of and side r has a length