so you take -10.5+5.3+20.2=??
-10.5+5.3=-5.2
-5.2+20.2=15
Ur Answer Is 15
Did I Help??
Hope I Did!!
<span>Its a RIGHT ANGLED TRIANGLE.
GIVEN:
hypo=25
opposite and adjacent=15 and 20.
FORMULA:
hypotenuse^2 =opposite side^2 + adjacent side^2
25^2=15^2+20^2
625=225+400
400+225=625
so its a right angled triangle....................
understand??</span>
Answer:
x is 0 or -7
Step-by-step explanation:
![4x^{2} +28x=0\\4x(x} +7)=0\\4x=0 x=0\\x+7=0\\x=-7](https://tex.z-dn.net/?f=4x%5E%7B2%7D%20%2B28x%3D0%5C%5C4x%28x%7D%20%2B7%29%3D0%5C%5C4x%3D0%20x%3D0%5C%5Cx%2B7%3D0%5C%5Cx%3D-7)
This has one solution because x can only equal 400
I can't speak to the cactus specifically, but any sphere has a surface area of
![4\pi r^2](https://tex.z-dn.net/?f=4%5Cpi%20r%5E2)
and a volume of
![\frac{4}{3} \pi r^3](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%7D%7B3%7D%20%5Cpi%20r%5E3)
, so the area-to-volume ratio wold be
![\frac{4\pi r^2}{ \frac{4}{3}\pi r^3 } = \frac{3(4\pi r^2)}{4(\pi r^3)}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%5Cpi%20r%5E2%7D%7B%20%5Cfrac%7B4%7D%7B3%7D%5Cpi%20r%5E3%20%7D%20%3D%20%5Cfrac%7B3%284%5Cpi%20r%5E2%29%7D%7B4%28%5Cpi%20r%5E3%29%7D)
![= \frac{3\pi r^2}{\pi r^3}\\\\ = \frac{3}{r}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B3%5Cpi%20r%5E2%7D%7B%5Cpi%20r%5E3%7D%5C%5C%5C%5C%0A%3D%20%5Cfrac%7B3%7D%7Br%7D%20%20%20)
Where <em>r</em> is the radius of the sphere.