If m∠abc = 80°, what is m∠dbc? justify your reasoning. a) using the angle addition postulate, 20 + m∠doc = 80. so, m∠doc = 60° using the subtraction property of equality.
b) using the angle addition postulate, 20 + 80 = m∠dbc. so, m∠doc = 100° using the addition property of equality.
c) using the addition property of equality, 20 + 80 = 100, so m∠doc = 100°.
d) using the subtraction property of equality, 80 − 20 = 60, so m∠doc = 60°.

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

Saline iv fluid bags cost $64.20 for 24, 1000 ml bags from one supplier. a new supplier sells 500 ml bags for $2 each. the hospital uses about 10,000, 1000 ml bags each month. nurses report that about half of the bags are more than half full when they are discarded. if you are going to use only one supplier, which size bag provides the best deal, and how much will you save each month? compare the cost of the new supplier to the current one.

What is the expression in factored form? -20x^2 - 12x a. 4x(5x+3) b. -4x(5x-3) c. -4(5x+3) d. -4x(5x+3)