<span>Plugging in p = 10 to solve for x:
x^2-50x-600 = (x-60)(x+10) = 0 => x = 60
x^2 - 5xp + 50p^2 = 3100
Differentiate with respect to time,
2xx' - 50x'p - 50xp' + 100pp' = 0
240 - 100(10) - 3000p' + 1000p' = 0
p' = -.38
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Answer:
All you have to do is multiply 5000 by .025 to find that she earns $125. Next, you multiply 125 by 7 and find that she earns $875!
Step-by-step explanation:
The answer is Option B , the solution is 3
Problem 7
(45 pages)/(90 min) = 1/2 page per min, i.e. 1 page per 2 minutes
(60 pages)(120 min) = 1/2 page per min
Both lead to the same result, so yes they are proportional.
Their reading speed is identical.
<h3>Answer: True</h3>
