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Mekhanik [1.2K]

4 years ago

5

The fastest texted in the world is Ben cook who toes 160 letter messages in about 40 seconds. If Ben texted 1 1/2 hours. How man

y letters would that be

1 answer:

Archy [21]4 years ago

5 0

Answer:

21600 letters

Step-by-step explanation:

There are 5400 seconds in 1.5 hr, so there are 135 40-second intervals. So, 160 messages multiplied by 135 time intervals is 21600 letters.

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Step-by-step explanation:

What kind of math is this and what grade are you in?

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3 years ago

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The savings account offering which of these APRs and compounding periods

Ann [662]

Answer:

The answer is "Option C"

Step-by-step explanation:

The using formula $= (1+\frac{r}{n})^n -1$

→r = rate

→ n = compounded value

In choice a:

When compounded is monthly $4.0784\%$

$n = 12$

$\to (1+ \frac{0.040784}{12})^{12} = 1.0403-1 = 0.0403$

In choice b:

When compounded is quarterly $4.0792\%$

$n = 3\\\\\to (1+ \frac{0.040792}{12} )^{3} = 1.0102-1 = .0102$

In choice c:

Whenn compounded is daily $4.0730 \%$

$n = 365\\\\\to (1+ \frac{0.040730}{12})^{365} = 3.328-1 = 2.328$

In choice d:

When compounded is semiannually $4.0798\%$

$n = 2\\\\\to (1+ \frac{0.040798}{12})^{2} = 1.0066-1 = 0.0066$

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3 years ago

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Katherine earned $105.00 at her job when she worked for 7 hours. How much money did she make earn each hour?

Bond [772]

Katherine earned $15 an hour, divide $105 by the seven hours she worked

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NemiM [27]

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