Last option is the correct answer.
Step-by-step explanation:
Given that
Let x stand for the solution a and y stand for the solution B
So,
According to statement that
30 gallons have to be made

Solution A contains 29 percent bromine => 0.29x
Solution B contains 53 percent =>0.53y
And the mixture of 30 gallons contains 45% bromine

Following equations will be used for solving the problem

Hence,
Last option is the correct answer.
Keywords: Equations, Variables
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Answer:
<h2>Yes</h2>
Step-by-step explanation:
He did set a record because 7/20 = 0.35. 11.35 < 11.4 seconds.
<em>PLEASE MARK BRAINLEST</em>
Answer:2x × 3 (Don't solve it cause you cant)
Step-by-step explanation:For the first one in parentheses you can't do it because their has to be an x with the two so you can do the problem.
For the next one you can do it. So for every letter that doesn't have a number their is always an invisible 1 in front of it. So it's 1x to the second power + 1x-1 so 1×1 is 1. 1x+1x=2x and the 2 and the one that doesn't have a letter equals 3. So the answer is
2x × 3 Hopefully this is correct and helps you out!