Which properties justify the steps taken to solve the system?

{2x−4y=−63x+2y=−1

Drag and drop the answers into the boxes to match each step.

{6x−12y=−186x+4y=−2

−16y=−16

y=1

2x−4(1)=−6

2x−4=−6

2x=−2

x=−1
these are the options given:
Action property of equality
Division action of equality
Multiplication of equality
associative property of addition
property of equality
simplify
Substitution Property of equality

In a sample of 2023 u. s. adults, 373 said franklin roosevelt was the best president since world war ii. two u. s. adults are selected at random from the population of all u. s. adults without replacement. assuming the sample is representative of all u. s. adults, complete parts (a) through (d). (a) find the probability that both adults say franklin roosevelt was the best president since world war ii. the probability that both adults say franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (b) find the probability that neither adult says franklin roosevelt was the best president since world war ii. the probability that neither adult says franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (c) find the probability that at least one of the two adults says franklin roosevelt was the best president since world war ii. the probability that at least one of the two adults says franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (d) which of the events can be considered unusual? explain. select all that apply. the event in part left parenthesis a right parenthesis is unusual because its probability is less than or equal to 0.05. the event in part (b) is unusual because its probability is less than or equal to 0.05. none of these events are unusual. the event in part (c) is unusual because its probability is less than or equal to 0.05.

Is the power produced directly proportional to the wind speed, give reasons for your answer?

Find the value of the combination. 5 c 5