If 28% of a sum is 100.80,what is the sum?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

Find the measure of angle y. round your answer to the nearest hundredth. ( type the numerical answer only) a right triangle is shown with one leg measuring 5 and another leg measuring 14. an angle across from the leg measuring 5 is marked y degrees. numerical answers expected!