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julia-pushkina [17]
3 years ago
8

What is cos 45º?

Mathematics
2 answers:
steposvetlana [31]3 years ago
8 0

Answer:

The exact value of cos(45°) is √(2) / 2.

Step-by-step explanation:

daser333 [38]3 years ago
5 0

Answer:

Answer:√2/2=cos45

√2/2×√2/√2=2/2√2

1/√2

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Answer:

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Step-by-step explanation:

The first equation will be the total cost. The total cost has $88,000 already and then $5,900 is added with each performance. So the equation would be 88,000+5,900x because x will represent the number of performances.

y = 88,000 + 5,900x

The next equation will be how much the performances earn. If they earn $7,500 with each performance then the equation will be 7,500x, with x representing the number of performances

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Now set the equations equal to each other and solve for x

7,500x = 88,000 + 5,900x

1,600x = 88,000

x = 55

They need to have 55 performances for the cost and the revenue to break even.

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