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Leya [2.2K]
2 years ago
11

A particular racing bicycle normally costs $3,000. If there is an 8.25% sales tax, what is the total price of the bicycle?

Mathematics
2 answers:
Alinara [238K]2 years ago
3 0

Answer:$642

Step-by-step explanation:

Solution:

First, calculate the amount of sales tax by multiply the percent tax times the total cost:

0.07×600 =42

Next, add the amount of tax to the price of the computer:

600+42=642

mylen [45]2 years ago
3 0

Answer:

3247.50

Step-by-step explanation:

I think, not 100% sure

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What is the ratio 18:24 in its simplest form
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Answer:

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Step-by-step explanation:

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Where x' = dx/dt

y' = dy/dt

z' = dz/dt

Given the function r(t) = (1/2)cos(t²)i + (1/2)sin(t²)j + (2/5)t^(5/2)

We can write

x = (1/2)cos(t²)

y = (1/2)sin(t²)

z = (2/5)t^(5/2)

x' = -tsin(t²)

y' = tcos(t²)

z' = t^(3/2)

(x')² + (y')² + (z')² = [-tsin(t²)]² + [tcos(t²)]² + [t^(3/2)]²

= t²(-sin²(t²) + cos²(t²) + 1 )

................................................

But cos²(t²) + sin²(t²) = 1

=> cos²(t²) = 1 - sin²(t²)

................................................

So, we have

(x')² + (y')² + (z')² = t²[2cos²(t²)]

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= (√2)tcos(t²)

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L = integral of (√2)tcos(t²) from 0 to 1

= (1/√2)sin(t²) from 0 to 1

= (1/√2)[sin(1) - sin(0)]

= (1/√2)sin(1)

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