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kupik [55]
3 years ago
12

It cost Paisley $9.20 to send 92 text messages. How much would it cost to send 110 text messages?

Mathematics
2 answers:
Flauer [41]3 years ago
6 0

Answer:

$11

Step-by-step explanation:

92=$9.20

100?

920/100x110/92

After this you will get 11 dollars.

That is the amount to send 110 text messages.

pshichka [43]3 years ago
5 0

Answer: it would cost paisley 11 dollars to send 110 messages! :D Hopefully this will help others as well!

Step-by-step explanation: Since she pays 9.20 to send 92 messages, we need to find the unit rate.

First, divide 9.20/92 and you should get 0.1

Now finally, multiply 0.1 x 110 and you should get 11 dollars!

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belka [17]

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By the chain rule,

\dfrac{\mathrm dh}{\mathrm dt}=\dfrac{\mathrm dh}{\mathrm dx}\dfrac{\mathrm dx}{\mathrm dt}

We have

h(x)=4e^{2x-6}-x^2+5\implies\dfrac{\mathrm dh}{\mathrm dx}=8e^{2x-6}-2x

and we're given that x changes at a constant rate of \frac{\mathrm dx}{\mathrm dt}=0.2 thousand people per minute, which means

\dfrac{\mathrm dv}{\mathrm dt}=\dfrac{3x\left(8e^{2x-6}-2x\right)\left(0.2\frac{\text{thousand people}}{\rm min}\right)-3h\left(0.2\frac{\text{thousand people}}{\rm min}\right)}{3x^2}

At the moment x=4 thousand people are in the park, we have h(4)=4e^2-11, so we find

\dfrac{\mathrm dv}{\mathrm dt}=\dfrac{12\left(8e^2-8\right)-3(4e^2-11)}{240}\dfrac{\text{thousand people}}{\rm min}=\dfrac{7(4e^2-3)}{80}\dfrac{\text{thousand people}}{\rm min}

or approximately 2.324 thousand people per minute.

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2 years ago
How do you <br>convert 7/5 into a decimal and round to the nearest hundreth
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