hectictar

6w(-5w⁴) = 6 * w * -5 * w⁴ = 6 * -5 * w * w⁴ = -30 * w⁵ = -30w⁵

Here, h is the height of the tree.

from the Pythagorean theorem:

h² + 80² = (11 + 2h)²

h² + 6400 = (11 + 2h)(11 + 2h)

h² + 6400 = 121 + 44h + 4h²            Subtract h² and 6400 from both sides.

0 = -6279 + 44h + 3h²                      Rearrange.

0 = 3h² + 44h - 6279                        Use quadratic formula to solve for h.

\(h = {-44 \pm \sqrt{44^2-4(3)(-6279)} \over 2(3)} \\~\\ h = \frac{-44\pm278}{6} \\~\\ h=\frac{-44+278}{6}=39 \qquad\text{or}\qquad h=\frac{-44-278}{6}=-\frac{161}3\)

So...the height of the tree must be 39 feet

Imagine folding this up like it says in the problem...we can see that

height of box = 5

width of box = w - 5 - 5 = w - 10

length of box = (w + 25) - 5 - 5 = w + 15

volume of box = (height)(width)(length)

750 = (5)(w - 10)(w + 15)

750/5 = (w - 10)(w + 15)

150 = w² + 5w - 150

0 = w² + 5w - 300

0 = (w + 20)(w - 15)

w = -20     or     w = 15

So...the original width must be 15 in.   

a bunch 

This may be the answer you want:

177 + 178 = 355

un numero: 177 mas el siguiente: 178 es igual a 355

NSS, hablas espanol? That's pretty sweet !!  

I want to learn how to speak spanish good....

What is it that you're trying to type in?

Maybe this is the button you're looking for: e

So..to do: 3 × 10⁴

Type:        3e4

Just make sure it displays correctly in the top,

because it might get it confused with the constant " e ".

You can click this button: x^y

Or you can type this key: ^

So.. to do:  4⁵

Type:          4^5

Found this:

big dog and little dog  💕

-45 - -3   =   -45 + 3   =   -42