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babymother [125]
2 years ago
5

What is the exact value of cos(11pi/21)cos(pi/7)-sin(11pi/21)sin(pi/7)?

Mathematics
2 answers:
Anika [276]2 years ago
7 0

Answer:

B

Step-by-step explanation:

-1/2

arsen [322]2 years ago
7 0

Answer:

B -1/2

Step-by-step explanation:

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give brainliest if it helps

7 0
3 years ago
The image of (2, -1) under the transformation T -5, 3 is _____.
LiRa [457]

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Step-by-step explanation:

3 0
2 years ago
78. How can the polynomial, 18x^2 + 30x^6 be factored using the GCF?
dexar [7]

Answer:

6x^2(5x^4 +3)

Step-by-step explanation:

The greatest common factor of 18 = 3·6 and 30 = 5·6 is 6.

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Factoring 6x^2 from both terms, we get ...

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_____

<em>Comment on the question</em>

Since this answer is not among the answer choices, I suggest you ask your teacher to demonstrate how this problem is worked.

It appears as though the answers go with the problem 18x^9 +30x^6. Maybe there's a typo somewhere. For that problem, the best choice is the 2nd answer.

6 0
3 years ago
Write an expression that represents the edge length of jewelry box
Mandarinka [93]

Answer:

The cubed-root of v (/v)

Step-by-step explanation:

Like your work on the second question illustrated, the cubed root of v (which is 216) is your expression for the edge length of the box in inches.

Hope this helps!

4 0
3 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

Your next 5 days will be like this:

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2 years ago
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