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3 years ago

Math is genially hard

Mathematics

1 answer:

Sveta_85 [38]3 years ago

4 0

Answer: Charlotte 7
Explanation:
we need to find p
36=29+p
subtract 29 from both sides
7=p

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A fence is 7 feet 6inches high 1 foot =12 INCHES WHAT IS THE HIEGHT OF THE FENCE IN CENTIMETRES

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228.6

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3 years ago

7. Lakeisha is designing a rectangular sunroom. She wants the room to be 14 feet wide and have a perimeter that is greater than

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3 years ago

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I need help with this problem

natulia [17]

There are 3 shorter boards because if you divide 27 by 9 it equals 3.

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4 years ago

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Simplify the expression using trigonometric identities:

Anastaziya [24]

The simplified expression is the one in option B.

<h3>How to simplify the expression?</h3>

Remember that:

$sec(x) = 1/cos(x)\\\\cos(x) = cos(-x)$

With these two, we can rewrite the numerator as:

$sec(x)*sin(-x) + tan(-x)\\\\\frac{1}{cos(x)}*sin(-x) + tan(x)\\\\\frac{1}{cos(-x)}*sin(-x) + tan(-x)\\\\2*tan(-x)$

Replacing that in the given expression, we have:

$\frac{2*tan(-x)}{1 + sec(-x)} = \frac{2*tan(-x)}{1 + 1/cos(-x)}$

Now, if we multiply and divide by cos(-x), we get:

$\frac{2*tan(-x)}{1 + 1/cos(-x)} = \frac{2*tan(-x)}{1 + 1/cos(-x)}*\frac{cos(-x)}{cos(-x)} \\\\= \frac{2*sin(-x)}{1 + cos(-x)}$

Now remember that:

$cos(x) = cos(-x)\\sin(-x) = -sin(x)$

With these two properties:

$\frac{2*sin(-x)}{1 + cos(-x)} = \frac{-2*sin(x)}{1 + cos(x)}$

Then the correct option is B.

If you want to learn more about trigonometric identities:

brainly.com/question/7331447

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2 years ago

Please help!!!!!!!!!!!!!!!!!!!!!!

DENIUS [597]

Answer:

Try 30

Step-by-step explanation:

I really hope this helps have a great afternoon:)

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3 years ago