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sweet [91]
3 years ago
8

Your plumber charges a flat rate of $150.00 to come out to your house and $55.50 per hour he is there. If the bill for your brok

en pipes was $344.25 how many hours was he there?
Mathematics
2 answers:
Kaylis [27]3 years ago
4 0
344.25-150=194.25; 194.25/55.5= 3.5 ~ 3.5 hours
AysviL [449]3 years ago
3 0
Let x equals hours he was there.

344.25=150.00+55.50x
-150.00 -150.00
----------- ----------
194.25=55.50x

194.25/55.50=55.50x/55.50

3.50=x

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y(t)=2e^{3t}(2-5t)

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\large\bf L\left\{y''\right\}=s^2Y(s)-sy(0)-y'(0)\\\\L\left\{y'\right\}=sY(s)-y(0)

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\large\bf \frac{4s-22}{s^2-6s+9}=\frac{4s-22}{(s-3)^2}=\frac{A}{s-3}+\frac{B}{(s-3)^2}

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