Answer:
=
Step-by-step explanation:
8.5 is also 8 and 1/2, it just has negative signs infront
1) 5 cups of yellow paint; because if 10 cups of yellow paint are used for 2 cups of blue paint, then you would use 5 cups of yellow paint to even out the pigment of one cup of blue.
2) 3 cups of blue paint, and 15 cups of yellow paint
3) 5 cups of yellow for every cup of blue paint
4) for every cup of blue paint 5 cups of yellow are used to get the same shade of green
The hypotenuse of the triangle is given by:
![CB ^ 2 = RC ^ 2 + RB ^ 2 ](https://tex.z-dn.net/?f=%20CB%20%5E%202%20%3D%20RC%20%5E%202%20%2B%20RB%20%5E%202%0A)
Substituting values:
![CB ^ 2 = 2 ^ 2 + 4 ^ 2 ](https://tex.z-dn.net/?f=%20CB%20%5E%202%20%3D%202%20%5E%202%20%2B%204%20%5E%202%0A)
Clearing CB we have:
![CB = \sqrt{ 2 ^ 2 + 4 ^ 2} CB = \sqrt{ 4 + 16} CB = \sqrt{20} CB = \sqrt{4*5} CB = 2\sqrt{5} ](https://tex.z-dn.net/?f=%20CB%20%3D%20%5Csqrt%7B%202%20%5E%202%20%2B%204%20%5E%202%7D%20%20%0A%0A%20CB%20%3D%20%5Csqrt%7B%204%20%2B%2016%7D%20%20%0A%0A%20CB%20%3D%20%5Csqrt%7B20%7D%20%20%0A%0A%20CB%20%3D%20%5Csqrt%7B4%2A5%7D%20%20%0A%0A%20CB%20%3D%202%5Csqrt%7B5%7D%20%20%0A%0A%0A%0A)
Then, the perimeter of the triangle is:
![P = RB + RC + CB ](https://tex.z-dn.net/?f=%20P%20%3D%20RB%20%2B%20RC%20%2B%20CB%0A)
Substituting values:
Answer: the perimeter of triangle BRC in units is: D.6 + 2√5
D, while numbers is the answer
Answer:
x = 1.5
Step-by-step explanation:
-1.2 (3 - x) = -1.8
<em>Apply distributive property</em>
-3.6 + 1.2x = -1.8
<em>Get 1.2x alone so add -3.6 to each side</em>
1.2x = 1.8
<em>Get x alone so divide 1.2 on each side</em>
x = 1.5
Hope this helps!