2 years ago

Can someone help me please

Mathematics

2 answers:

allsm [11]2 years ago

5 0

You answer would be

Both of them are 4a-ly

Sever21 [200]2 years ago

4 0

Answer:

first one is 4a -1 y

2nd one is 4a -1y

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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

Which represents x2 – 12x + 36 in factored form?

alexandr402 [8]

Answer:

(x - 6)(x - 6)

Step-by-step explanation:

The given quadratic equation is $x^2 - 12x + 36 = 0$ .

A quadratic equation can be factored in the form $(x - a)(x - b)$ where $-a$ and $-b$ will form the roots of the equation.

Here the roots are: $+6 , +6$ .

The factored form would simply be: $(x - 6) (x - 6)$ .

3 0

2 years ago

PLSSSSSSSS I NEED HELP ASAP

Amanda [17]

Answer:

Step-by-step explanation:

7 0

2 years ago

There are 487 books in the classroom library. What is this number rounded to the nearest ten?

DerKrebs [107]

487 rounded to the nearest ten is 490......because 487 is closer to 490 then it is to 480.

8 0

3 years ago

Read 2 more answers

Which of the following are some of the possible soulitions for the inequality -9w < -54

Alekssandra [29.7K]

the answer

w < 6

Step by Step

-9w < -54

w < -54/-9

w< 6

4 0

3 years ago