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2 years ago

I know it's an insanely simple question, but my brain isn't working right now and I need help.

Mathematics

2 answers:

faltersainse [42]2 years ago

6 0

Answer:

4 cookies

Step-by-step explanation:

1/3 of 12 is 4 so her son ate 4 cookies, your welcome

Firlakuza [10]2 years ago

3 0

Answer:

he ate 4

Step-by-step explanation:

1/3 is .333 repeating and if u divide that by 12 u get 4

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Integrate sin²2x cos²2x dx

DochEvi [55]

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

From the identities above, you have

$\sin^22x\cos^22x=\dfrac{(1-\cos4x)(1+\cos4x)}4=\dfrac{1-\cos^24x}4$

Applying once more, you have

$\dfrac{1-\cos^24x}4=\dfrac{1-\dfrac{1+\cos8x}2}4=\dfrac{1-\cos8x}8$

So,

$\displaystyle\int\sin^22x\cos^22x\,\mathrm dx=\frac18\int(1-\cos8x)\,\mathrm dx=\frac x8-\frac1{64}\sin8x+C$

7 0

3 years ago

What is the factored form of r^27 - s^30

svlad2 [7]

Answer:

(r^9-s^10) (r^18+r^9 s^10 + s^20)

Step-by-step explanation:

hope this helps :)

8 0

3 years ago

The length of a rectangle is 11 inches longer than it's width, the perimeter is 86 inches write an equation and solve to find le

olga_2 [115]

I have no clue soooo sorry

6 0

3 years ago

tensa zangetsu [6.8K]

Answer:

Step-by-step explanation:

when it's multiplication exponent add up

so the one in the parentheses will be ( x^4/3 x ^2/3) = x ^ 4/3 +2/3 = x ^ 6/3

when you simplify it will give you x ^2

now the last step will be to multiple the exponent

x^ 2/3

4 0

2 years ago

Can someone find the total area of this poster

xeze [42]

Answer: 1,360

Step-by-step explanation:

20 * 20 = 400

20 * 12 = 240

240 * 4 = 960

960 + 400 = 1,360

7 0

3 years ago