Answer:
I think its C. I hope this helps.
![5x^2+2x-1=0](https://tex.z-dn.net/?f=5x%5E2%2B2x-1%3D0)
Delta equation is:
![\Delta =\frac{-b\pm\sqrt(b^2-4ac)}{2a}](https://tex.z-dn.net/?f=%5CDelta%20%3D%5Cfrac%7B-b%5Cpm%5Csqrt%28b%5E2-4ac%29%7D%7B2a%7D)
but we are interested in
![b^2-4ac](https://tex.z-dn.net/?f=b%5E2-4ac)
because it determines the discriminant
![5^2-4*2*(-1)=25+8=33](https://tex.z-dn.net/?f=5%5E2-4%2A2%2A%28-1%29%3D25%2B8%3D33)
![33>0](https://tex.z-dn.net/?f=33%3E0)
which means that discriminant is positive :)
If it says "what is the equation of a slope of -3 and a y-intercept of -8"
Slope-intercept form: y = mx + b
("m" is the slope, "b" is the y-intercept or the y value when x = 0 --> (0, y) or the point where the line crosses through the y-axis]
Since you know:
m = -3
b = -8 Substitute/plug it into the equation
y = mx + b
y = -3x - 8
Answer:
2π or 6.2831 (I don't know which since I don't know what to round to or if it is supposed to be in terms of π soooo)
Step-by-step explanation:
![2\pi(1) = 2\pi = 6.2831](https://tex.z-dn.net/?f=2%5Cpi%281%29%20%3D%202%5Cpi%20%3D%206.2831)
9514 1404 393
Answer:
2450
Step-by-step explanation:
The function C(n, k) = n!/(k!(n-k)!) tells how many ways k items can be chosen from n. The function can also be written nCk.
The number of ways the team can be formed is the product of the number of ways the women can be chosen and the number of ways the men can be chosen. This will be ...
(7C3)(8C4) = 35×70 = 2450
The team can be chosen 2450 ways from the given group.