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Congrats!!!

12 x 80 = 960 m^2

0.3048^2 =0.09290304 m^2 per ft^2

960 / 0.09290304 =10,333 ft^2 - Area of wall to be painted.

10,333 / 200 =51.665 =~52 gallons to paint the entire wall.

it seems thats wrong

I think you want 200/x, and NOT x/200 because x here is infinite. So, I think you want the "divisors" of 200.

(1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200) >>Total = 12 . These are all the divisors of 200, which will divide 200 evenly. In other words:200 /2,    200/4,    200/5......and so on.

The roots are x = (5 \pm sqrt(15))/2.  Plugging these in, we get (2a - 3)(4b - 6) = -62.

The wall is 12*80 = 960 m^2.  This converts to 960/0.3048 = 3150 square feet, so the number of gallons needed is 3150/200 = 15.74, which rounds up to 16.

(x+3)(x+10)       and     (x+10)(x-5)        you can do the   a + b + c  part

Yes, but I wanted to give a big explanation. Since you got it, I don't need to do it xD

xD I think I might have figured it out!

There's just BDAC and CADB

So it's just 2 ways, I think? 

Very helpful! Thanks so much!

Scientific notation is usually for writing gigantically enormous numbers, or teensy miniscule numbers.

It is written as \(a \cdot 10^x\). 

\(a\) can be a integer or decimal between 0 and 10 (non-inclusive).

Some examples:

\(31,469 = 3.1469 \cdot 10^{4}\)

\(142000000000000000 = 1.42 \cdot 10^{17}\)

If a number is less than 1, it is written as 10 ^ {negative number}.

\(0.02 = 2 \cdot 10^{-2}\)

\(0.00000000103 = 1.03 \cdot 10^{-11}\)

\(31.1 \cdot 10^{16}\) isn't scientific notation, as 31.1 can further be divided by 10 to become \(3.11 \cdot 10^{17}\),

This is a rather short summary of scientific notation, but I hope you can understand some part of it now.

Go to these links for more info!

I might not be correct, but I think it's 2. I don't have time to show a solution, but I will about 30 min. later.

Uh so I know that it is used with powers, but I don't know how how to solve it.

:) gj CentsLord

good job ep nice.

So, let b = # of boys and g = # of girls.

1/3 of b = 2/5 g, every boy has a girl to pair up with and vice versa in the group.

b/3 = 2g/5

b + g = 88

We can write a variable in terms of the other, like this: b = 88 - g

(88 - g) / 3 = 2g / 5

440 - 5g = 6g

440 = 11g

Hmm, nice!

g = 440 / 11 = 40

So, there are 40 girls.

Then, there are 88 - 40 = 48 bois!

f(x) = 3 - 2(51)x

2(51)x > 0

So, -2(51)x < 0

     3 - 2(51)x < 3

Range = (-∞, 3)

Just break it into pieces and add them together

triangle on left 1/2 b h        1/2 (49-34) (20)

middle rectangle   width x height  (34)(20)

right semicircle  1/2 pi r^2   = 1/2 pi (10)^2

What is the length of the bottom of the triangle. Use it on the formula for the area of the triangle add it with the area of the rectangle which is 49 times 20. The area of a circle is PiR^2 and the radius is 10 since the width is 20. Divide by 2 and you get a semicircle. (15*20)/2+49*20+50Pi Which is 1130 + 50 Pi.