3 years ago

Can someone please answer this worksheet for me. I would be really thankful if you do so.

Mathematics

1 answer:

zhenek [66]3 years ago

6 0

I know 1 but I don’t know 2

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Rewrite <br><img src="https://tex.z-dn.net/?f=%20%7Bcos%7D%5E%7B4%7D%20x" id="TexFormula1" title=" {cos}^{4} x" alt=" {cos}^{4}

erastovalidia [21]

All you need is the double angle identity:

$\cos^2x=\dfrac{1+\cos2x}2$

So we have

$\cos^4x=(\cos^2x)^2=\left(\dfrac{1+\cos2x}2\right)^2=\dfrac{1+2\cos2x+\cos^22x}4$

Apply the identity again to the squared term:

$\cos^4x=\dfrac{1+2\cos2x+\frac{1+\cos4x}2}4=\dfrac{3+4\cos2x+\cos4x}8$

6 0

3 years ago

PLEASE HELP ME ASAP!

Zanzabum

The answer is eighty/ eighty-two

7 0

4 years ago

Help!!!!!!! Meeee plead I’ve already out this question down but nobody answers it:(

lorasvet [3.4K]

Answer:

1. Y = 6

2. Y = 8

3. Y = 1

4. Y = 3

Step-by-step explanation:

1. Y = -(-1) + 5 = 1 + 5 = 6

2. Y = -(-3) + 5 = 3 + 5 = 8

3. Y = -4 + 5 = 1

4. Y = -2 + 5 = 3

Hope this helps you!

3 0

3 years ago

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Anton leaves a cup of hot chocolate on the counter in his kitchen. Which graph is the best representation of the change in tempe

NNADVOKAT [17]

Answer:

Step-by-step explanation:

May I please see the graph?

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3 years ago

Which expression is not a polynomial?

solmaris [256]

Answer:

Step-by-step explanation:

For an expression to be a polynomial , it must contain no square roots of variables, no fractional or negative powers on the variables, and no variables in the denominators of any fractions.

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3 years ago

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Can someone please answer this worksheet for me. I would be really thankful if you do so. ​

Can someone please answer this worksheet for me. I would be really thankful if you do so.