Answer:
If you need what x equals its -16
Answer:
8.6 cm
Step-by-step explanation:
V=pi r-squared h
diameter of 10 means radius of 5
675.1=3.14x5x5xh
675.1=78.5h
8.6
3.0 NOT SURE IF ITS CORRECT
Answer:
x = -1 +/-2i
Step-by-step explanation:
Write the equation in standard form to find the roots, also known as the solutions, zeros, or x-intercepts, of the quadratic.
x² + 2x + 5 = 0
Use the quadratic formula by substituting a= 1, b = 2 and c = 5.
![x = \frac{-2 +/- \sqrt{(-2)^2 - 4(1)(5)} }{2(1)} = \frac{-2 +/-\sqrt{4 -20 } }{2} = \frac{-2 +/-\sqrt{-16 } }{2} = \frac{-2 +/-4i }{2} = -1 +/-2i](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B-2%20%2B%2F-%20%5Csqrt%7B%28-2%29%5E2%20-%204%281%29%285%29%7D%20%7D%7B2%281%29%7D%20%3D%20%5Cfrac%7B-2%20%2B%2F-%5Csqrt%7B4%20-20%20%7D%20%7D%7B2%7D%20%3D%20%5Cfrac%7B-2%20%2B%2F-%5Csqrt%7B-16%20%7D%20%7D%7B2%7D%20%3D%20%5Cfrac%7B-2%20%2B%2F-4i%20%7D%7B2%7D%20%3D%20-1%20%2B%2F-2i)
Answer:
7d+11
Step-by-step explanation:
Pretty much just addition.
3d+4d+2+9
(3d+2)+(4d+9) = 7d+11.