Answer:
D
Step-by-step explanation:
The quadratic formula:
![\frac{-b\pm \sqrt{b^2-4ac}}{2a}](https://tex.z-dn.net/?f=%5Cfrac%7B-b%5Cpm%20%5Csqrt%7Bb%5E2-4ac%7D%7D%7B2a%7D)
where a is the coefficient of
, b being the coefficient of
and c being the constant.
Plug in the values:
![\frac{-\left(-5\right)\pm \sqrt{\left(-5\right)^2-4\cdot \:2\cdot \:5}}{2\cdot \:2}](https://tex.z-dn.net/?f=%5Cfrac%7B-%5Cleft%28-5%5Cright%29%5Cpm%20%5Csqrt%7B%5Cleft%28-5%5Cright%29%5E2-4%5Ccdot%20%5C%3A2%5Ccdot%20%5C%3A5%7D%7D%7B2%5Ccdot%20%5C%3A2%7D)
![\frac{5\pm\sqrt{-15} }{4}](https://tex.z-dn.net/?f=%5Cfrac%7B5%5Cpm%5Csqrt%7B-15%7D%20%7D%7B4%7D)
Since ![\sqrt{-15} =\sqrt{-1} \sqrt{15} =i \sqrt{15}](https://tex.z-dn.net/?f=%5Csqrt%7B-15%7D%20%3D%5Csqrt%7B-1%7D%20%5Csqrt%7B15%7D%20%3Di%20%5Csqrt%7B15%7D)
The answer is:
![\frac{5\pm i \sqrt{15} }{4}](https://tex.z-dn.net/?f=%5Cfrac%7B5%5Cpm%20i%20%5Csqrt%7B15%7D%20%7D%7B4%7D)
Answer:
you have to find the mean, median, and mode so the 1st is that you have to add numbers and then multiple it
Step-by-step explanation:
did this in 8th grade middle school
Answer:
he is currently 34
Step-by-step explanation:
x + 6 = 5(x-26)
x + 6 = 5x - 130
+130 +130
x + 136 = 5x
-x -x
136 = 4x
/4 /4
x = 34
You can check your work as well:
34 + 6 = 40
34 - 26 = 8
8 x 5 = 40