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3 years ago

12

can someone explain how this example answer is the answer, this is about mixed to improper fractions and i dont know how to do t

his so can you help?

1 answer:

OleMash [197]3 years ago

5 0

You multiply the whole number by the denominator (2x4) then add the numerator (2x4)= 8 then plus 1 so 8+1 is 9 and that's how you get your answer 9/4

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Which expression completes the identity cos u sin v = ?

Lilit [14]

The product of trigonometric functions can be converted into sum ans vice versa. The given function is a product and we can convert it to a sum.One way is to expand the given expression and simplify it to find the result.

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2 years ago

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Allisa [31]

Answer:

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3 years ago

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aliya0001 [1]

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3 years ago

Please help me with this geometry question and show work

soldi70 [24.7K]

(3) 8

Step-by-step explanation:

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BC/AB = DE/AD

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or

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8 0

2 years ago

The water level of a certain body of water is changing at a rate of W(t)=3/4cos(4-t/2) inches per hour, where t represents hours

Leni [432]

Answer:

The answer is below

Step-by-step explanation:

a) The integral $\int\limits^{10}_{1 } {W(t)} \, dt$ means the total change in level of water in inches from 1 am to 10 am. That is the water level change measured in inches between 1 am and 10 am

b) 7 pm is represented as t = 19 hours, while midnight is represented as t = 24 hours, hence the water level change between 7 pm and midnight is:

$\int\limits^{24}_{19 } {W(t)} \, dt\\\\$

c) Using casio calculator to evaluate the integral gives:

$\int\limits^{24}_{19 } {W(t)} \, dt\\\\$ = 2.54 inches

D) The total daily change in water level = $\int\limits^{24}_{0 } {W(t)} \, dt\\\\$ = 0.35 inches

8 0

2 years ago