Here is the math problem.
"there are 2 blue marbles, 3 red marbles and 2 yellow marbles in a paper bag. what fraction of the marbles are red or yellow? if the number of marbles of each color in the bag was doubled, how would your answer change? "

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

(05.08a)triangle abc is transformed to similar triangle a′b′c′ below: a coordinate plane is shown. triangle abc has vertices a at 2 comma 6, b at 2 comma 4, and c at 4 comma 4. triangle a prime b prime c prime has vertices a prime at 1 comma 3, b prime at 1 comma 2, and c prime at 2 comma 2. what is the scale factor of dilation? 1 over 2 1 over 3 1 over 4 1 over 5