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MA_775_DIABLO [31]
3 years ago
8

Need help please !!!

Mathematics
1 answer:
irina1246 [14]3 years ago
3 0

sin^2 x + 4 sinx +3       3 + sinx

--------------------------  =  -------------------

cos^2 x                        1 - sinx


factor the numerator


(sinx +3) (sinx+1)       3 + sinx

--------------------------  =  -------------------

cos^2 x                        1 - sinx


cos^2 = 1-sin^2x

(sinx +3) (sinx+1)       3 + sinx

--------------------------  =  -------------------

1- sin^2x                       1 - sinx

factor the denominator

(sinx +3) (sinx+1)       3 + sinx

--------------------------  =  -------------------

(1-sinx ) (1+sinx)                   1 - sinx

cancel the common term (1+sinx)  and (sinx +1)

(sinx +3)                       3 + sinx

--------------------------  =  -------------------

(1-sinx )                           1 - sinx


reorder the first term

3+sinx                           3 + sinx

--------------------------  =  -------------------

(1-sinx )                           1 - sinx

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Answer:

B) 4

Step-by-step explanation:

Tan is opposite/adjacent. That means that 3 is the opposite side while 4 is the adjacent side.

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Lisa's pet shop has 2 fish tanks.Tank A contains smaller fish who are fed 1 gram of food each per day.Tank B contains 2/3 the nu
Nutka1998 [239]

Answer:

Lisa will not be able to feed both tanks the same amount of food.

Step-by-step explanation:

This question is incomplete, here is the complete question :

"Lisa pet shop has 2 fish tank . Tank A contains smaller fish who were fed 1 gram of food each per day. Tank B contains larger fish who are fed 2 gram each per day. If tank B contains 2/3 the number of fish Tank A contains,will Lisa ever feed both tanks the same amount of food."

Let the number of fish in tank A = f

Lisa fed 1 gram of food each per day  = f × 1 = f

So,the number of fish in tank B =  \frac{2}{3}f

Lisa fed 2 gram of food each per day = \frac{2}{3}f\times 2

If both the tanks are fed with same amount of food then

f=\frac{2f}{3}\times 2

f=\frac{4f}{3}

⇒ 3f = 4f

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But 3 ≠ 4

Therefore, Lisa will not be able to feed both tanks the same amount of food.

5 0
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Ty has a $30 gift card. He already bought a $9 book, and wants to buy $3
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Step-by-step explanation:

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Ratling [72]

triangles are not similar

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Westkost [7]

Given:

f(y)=e^{9y}+e^{-9y}

To find:

The f'(y).

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Chain rule of differentiation:

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Differentiation of exponential:

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We have,

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Differentiate with respect to y.

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Therefore, the differentiation of the given function is f'(y)=9e^{9y}-9e^{-9y}.

5 0
3 years ago
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