Answer:
The solution is (-17,80.5) and (1,8.5)
Step-by-step explanation:
Equation 1 : ![y=\frac{1}{2}x^2+4x+4](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B1%7D%7B2%7Dx%5E2%2B4x%2B4)
Equation 2: ![y = -4x+12.5](https://tex.z-dn.net/?f=y%20%3D%20-4x%2B12.5)
Substitute the value of y from equation 2 in equation 1
Equation 1 : ![y=\frac{1}{2}x^2+4x+4](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B1%7D%7B2%7Dx%5E2%2B4x%2B4)
After substitution :
![-4x+12.5=\frac{1}{2}x^2+4x+4\\\frac{1}{2}x^2+8x+4-12.5=0\\\frac{1}{2}x^2+8x-8.5=0\\x^2+16x+17=0\\x=-17,2](https://tex.z-dn.net/?f=-4x%2B12.5%3D%5Cfrac%7B1%7D%7B2%7Dx%5E2%2B4x%2B4%5C%5C%5Cfrac%7B1%7D%7B2%7Dx%5E2%2B8x%2B4-12.5%3D0%5C%5C%5Cfrac%7B1%7D%7B2%7Dx%5E2%2B8x-8.5%3D0%5C%5Cx%5E2%2B16x%2B17%3D0%5C%5Cx%3D-17%2C2)
Substitute the value of x = -17
y = -4x+12.5
y = -4(-17)+12.5
y=80.5
Substitute the value of x = 1
y = -4(1)+12.5
y=8.5
Hence the solution is (-17,80.5) and (1,8.5)
-2√20 - √125
(first make radical into simplest form - make sure to get similar radical)
√20 = 4√5
√125 = 5√5
(subtract the common radicals together)
-4√5 - 5√5 = -9√5
-9√5 is your answer
hope this helps
Answer:
18.18%
Step-by-step explanation:
66 - 54 = $12
% change - 12/66 * 100
simplify - 12/66 --> 2/11
2/11 * 100
200/11
<em>18.18%</em>
Answer:
Not
Step-by-step explanation:
6/8 In Simplest Form 3/4
21/36 In Simplest Form 7/12 May Be The Answer Will Be Not Equivalent
Hope To Help!!!