Answer:
How do you find the sum of factors of a quadratic equation?
Let r and s be the factors for the quadratic equation such that x^2+Bx+C=(x−r)(x−s) where sum of factors (r+s)=−B and the product of factors rs = C r = -2 - u s = -2 + u Two numbers r and s sum up to -4 exactly when the average of the two numbers is \frac{1}{2}*-4 = -2.
How do you solve a quadratic equation?
Quadratic equations such as this one can be solved by completing the square. In order to complete the square, the equation must first be in the form x^{2}+bx=c.
Step-by-step explanation:
Answer:
Step-by-step explanation:
The equation of a sine function is y = a sin(bx), where a = amplitude (aka height) and b equals period (aka time). I'm assuming there isn't any information other than the graph shown, so let's assume that our amplitude is 1 and our period is 2pi/3. Plugging these values into the equation, we get:
Answer:
b
Step-by-step explanation:
because i did it and got that answer its correct
Answer:
0.84134
Step-by-step explanation:
Given that:
Mean, m = 70
Standard deviation, s = 10
P(x ≥ 60)
Obtain the standardized score (Zscore) :
Z = (x - m) / s
Z = (60 - 70) / 10
Z = - 10 / 10
Zscore = - 1
P(Z ≥ 1) = 0.84134 (Z probability calculator)