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Kipish [7]
3 years ago
6

Factorize cos2A - 5 cosA + 6

Mathematics
1 answer:
Tamiku [17]3 years ago
5 0

Answer:

Let's assign the variable x to cosA. The expression then becomes x² - 5x + 6. To factorize this we need to find two numbers that have a sum of -5 and a product of 6; these numbers are -2 and -3 so the expression becomes (x - 2)(x - 3). Since we know that x = cosA the final answer is (cosA - 2)(cosA - 3).

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5 0
3 years ago
Toby is making a picture graph.Each picture of a book is equal to 2 books he has read. The row for Month 1 has 3 pictures of boo
xxTIMURxx [149]

Let

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Read 2 more answers
Please please help me on how to do congruent figures!
AlexFokin [52]

Answer:

x = 5

Step-by-step explanation:

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Given theta

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50 = 10x

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10x = 50

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7 0
2 years ago
In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally dis
aliya0001 [1]

(A)

P(<em>X</em> < 61.25) = P((<em>X</em> - 55.4)/4.1 < (61.25 - 55.4)/4.1)

… ≈ P(<em>Z</em> ≤ 0.1427)

… ≈ 0.5567

(B)

P(<em>X</em> > 46.5) = P((<em>X</em> - 55.4)/4.1 > (46.5 - 55.4)/4.1)

… ≈ P(<em>Z</em> > -2.1707)

… ≈ 1 - P(<em>Z</em> ≤ -2.1707)

… ≈ 0.9850

5 0
3 years ago
How can you tell if a equation is extraneous
geniusboy [140]
Do you mean an extraneous solution? I will tell you what I think. To tell if a solution is extraneous you need to go back to the original problem and check if there actually is a solution or if the solution is actually right. If not then it is extraneous.
6 0
3 years ago
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