Jose has $12.80 in nickels and dimes. there are a total of 144 coins. how many nickels and dimes are there

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

Can someone me out here and the tell me the greatest common factor

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28