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makvit [3.9K]
2 years ago
10

Pat paid $85.50 for renting a scooter for 6 hours. What was the rate per hour for renting the scooter?

Mathematics
1 answer:
enyata [817]2 years ago
5 0

Answer:

14.25

Step-by-step explanation:

85.50 devided by 6 = 14.25

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Answer:

(the relation you wrote is not correct, there may be something missing, so I will simplify the initial expression)

Here we have the equation:

sin^4(x) + cos^4(x)

We can rewrite this as:

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Now we can add and subtract cos^2(x)*sin^2(x) to get:

(sin^2(x))^2 + (cos^2(x))^2 + 2*cos^2(x)*sin^2(x) - 2*cos^2(x)*sin^2(x)

We can complete squares to get:

(cos^2(x) + sin^2(x))^2 - 2*cos(x)^2*sin(x)^2

and we know that:

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then:

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This is the closest expression to what you wrote.

We also know that:

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If we replace that, we get:

1 - \frac{sin^2(2*x)}{2}

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cos^4(x) + sin^4(x)  = 1 - \frac{sin^2(2*x)}{2}

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