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Solnce55 [7]
4 years ago
10

Trigonometry

Mathematics
1 answer:
dexar [7]4 years ago
4 0

Answer:

cos (12+10) = cos (22)

Step-by-step explanation:

Cos 12* cos 10* - sin 12* sin 10*

Appling the trig identity: cos (a + b) = cos a.cos b - sin a.sin b

inputing the values of a and b

cos (12 + 10) = cos 12cos 10 - sin 12sin 10  = cos (22)

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Answer: The answer to this question is 10 :D

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The Cunningham family went to a dinner at Pasta Palace. Mr Cunningham ordered a meal for &7.50; Mrs. C ordered a meal for $6
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The total bill for the Cunningham family was $29.26.

Step-by-step explanation:

Step 1; First we total up the cost of the food alone. Mr. Cunningham spent $7.50, Mrs. Cunningham spent $6.25, the 2 children spent $4.99 each which equals $9.98 for both. So the total of the food alone was $23.73.

Step 2; The sales tax rate was 7.25% of the $23.73. So we multiply 0.0725 (7.25%) with the $23.73 which equals $1.72. So the total bill was for $23.73 + $1.72 which equals $25.45.

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5 0
3 years ago
What is the value of 1 in the number 450.731? A. 0.0001 B. 0.001 C 0.01 D 1
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The answer should be D
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3 years ago
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Answer:

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Step-by-step explanation:

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(b) The probability that exactly one of the resistors chosen is functional is the probability that either red is functional and green is not or green is functional and red is not.

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P(\text{exactly one is functional}) = P(R\cap \sim G) + P(G\cap \sim R) = (P(R) \times P(\sim G)) + (P(G) \times P(\sim R))

P(\text{exactly one is functional}) = (0.9 \times 0.25) + (0.75 \times 0.1) = 0.225 + 0.075 = 0.3

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4 years ago
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Hope this helps answer your question and have a nice day ahead.
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3 years ago
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