i don’t know for sure but i just figured it out....
Initial flow rate: 74 gallons/33 minutes = 2.24 gallons/minute
Addtiional flow rate: 2*74/33 = 4.48 gallons/minute
Total new rate: 3*74/33 = 6.72 gallons/minute
The answer is the option C) 6.7
Answer:
Step-by-step explanation:
Given
Required
Calculate one of the root of the equation
Factorize
Split equation
Make x the subject of formula in both expressions
<em>From the list of given options, one of the roots of the equation is</em> 
To find the unit rate of any two numbers you divide:
9.60 divided by 4 = 2.4
Unit rate = $2.40
Hope I helped! :)
Answer to part A: 11w^2+7z^2
Answer to part B: 14w^2+9w
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Explanation:
For part A, the expression 4w^2+7w^2+7z^2 has one pair of like terms. That pair is 4w^2 and 7w^2 which combine to 11w^2. You add the coefficients to get 4+7 = 11, then tack w^2 onto everything to say 4w^2+7w^2 = 11w^2
We cannot combine 11w^2 and 7z^2 as they aren't like terms. So we leave it as 11w^2+7z^2
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In part B, the like terms are 15w and -9w. They combine to 15w-9w = 6w. You can think of it like 15-9 = 6 then stick a 'w' to each term. We cannot combine the w^2 term with the w terms.
