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1/2=2/4, 2+7=9 

1/2+7/4=9/4 or 2 1/4.

To add fractions, just add the numerators. If the denominators aren't the same, find the least common multiple of the denominators.

There are 60 seconds in a minute. So there are 36 times 60 seconds, or 2160 seconds in 36 minutes.

its 0.15 duhh

Watermelons are actually 92% water, so there you go!

4.544 times 10^-3

21... whats 9+10.... 21!

19..................OMG!!!

12634218699513022789239452859046486527803433835183365215767668955.6442090308557748

happy?

I'm going to take a wild guess and say that this person broke their keyboard by slamming on random numbers. 

if you have the tangent of an angle take it (tangent) times the adj. side this give the length of opp. side

Rustynut

So 220% of y equals 55.

Do 55 divided by 220 ( which is 1/4)then times 100 which is 25

My bad.... 4-2=2 2-3= -1 Slope is -2.

I'm really sorry for the confusion.

I have to agree with sasefllower ...

Good job, saseflower! Good use of proportions and cross-multiplying.

x/100 = 40/400

Cross multiply

400x = 4000

Divide by 400 on both sides

x = 100

x = 10%

Since 40/400 is 1/10, and 1/10 is equal to 10/100, which is, again, equal to 10%, that means 40 is 10% of 400.

*Comment does not exist*

Plug the numbers into the formula above ^^

m = (4 - 2)/(2 - 3)

Solve

2/-1

I have no idea what n = 6 has to do with the problem ... ignoring that:

∫₀²(x + 1)²dx  =  ∫₀²(x² + 2x + 1)dx  =  [x³/3 + x² + x]₀²  =  [2³/3 + 2² + 2] - [0³/3 + 0² + 0]

   =   8/3 + 4 + 2 - 0 - 0 - 0  =  26/3

For problems like this:  x⁷ · x⁵,  add the exponents to get x¹².

x^a · x^b  =  a^{a + b}

If by 1/5% you mean 1/5 of 1%, which would be equal to 0.2%, multiplying it by 10 would equal 2%. If you mean 1/5 of 100%, 20, 20% times 10 is 200%

-0.5x² + 5x + 20

Factor out the -0.5 from the first two terms:

-0.5(x² - 10x) + 20

Complete the square:  divide -10 by 2 and square the answer:  (-10 ÷ 2)² = 25

Add 25 inside the parantheses and add 12.5 at the end of the expression, so the value of the expression doesn't change (the reason that you add 12.5 is that you have entered -12.5 within the parantheses: -0.5 x 25 = -12.5):

-0.5(x² - 10x + 25) + 20 + 12.5

-0.5(x - 5)² + 32.5

Now, you can pick out p and q ...

Let's turn these fractions into ones with common denominators first. The LCD of 8 and 12 is 24. 24/8=3, and 5 times 3 equals 15. 24/12=2, and 7 times 2 equals 14.

So.... we end up with 15/24+14/24. 15+14=29. Therefore, 5/8+7/12=29/24, or 1 5/24.

-22/18= -1 2/9, 89-22+19=86 

86 x -1 2/9 is -105 1/9