I am attaching the question
1 answer:
<u>Answer:</u>
r =
<u>Step-by-step explanation:</u>
Multiply both sides by r + 120.
<em>t </em>(<em>r </em>+ 120) = 120<em>r</em>
Expand.
<em>tr </em>+ 120<em>t </em>= 120<em>r</em>
Subtract <em>tr</em> from both sides.
120<em>t </em>= 120<em>r </em>- <em>tr</em>
Factor out the common term <em>r</em>.
120<em>t </em>= <em>r </em>(120-<em>t</em>)
Divide both sides by 120 -<em> t</em>.
= r
Finally, switch <em>r</em> to the left side and you get your answer.
//also, sorry for answering late.. my wifi is poopy//
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Answer:
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, the answer is f(2)=13.6.
Step-by-step explanation:
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<h3>Answer: Choice A</h3>
- Domain: x > 4
- Range: y > 0
========================================================
Explanation:
We want to avoid having a negative number under the square root. Solving leads to
So it appears the domain could involve x = 4 itself; however, if we tried that x value, then we'd get a division by zero error.
So in reality, the domain is x > 4.
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The range of y = sqrt(x) is the set of positive real numbers. So y > 0 is the range for this equation. Shifting left and right does not affect the range, so the range of y = sqrt(x-4) is also y > 0.
We are dividing a positive number (3) over some positive number in the denominator. Overall, the expression is positive because positive/positive = positive.
Therefore, the range of the given equation is y > 0
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The graph is shown below. We have a vertical asymptote at x = 4 and a horizontal asymptote at y = 0. The green curve is fenced in the upper right corner (northeast corner).