What is the expression to 2x-4y-10x+by

What is the measure of the smallest angle in the diagram? 15 29 32 45

Bring the fraction a/a-4 to a denominator of 16-a^2

Convert the number to decimal form. 12) 312five a) 82 b) 30 c) 410 d) 1560 13) 156eight a) 880 b) 96 c) 164 d) 110 14) 6715eight a) 53,720 b) 3533 c) 117 d) 152