tamerrapittsoy4ii6
17.02.2021 •
Mathematics
Carl is deriving the quadratic equation by completing the square. His work at one of the steps is shown. x + b/na = + or - b^2-4ac. Carl is not sure what the value of n is. What value should he use to continue deriving the quadratic equation correctly? A. 1 B. 2 C. 3 D. 4
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Ответ:
the correct option is B. 2
Step-by-step explanation:
As given,
x + = ± √b²-4ac
⇒x = - ± √b²-4ac
As e know that the quadratic formula is
x =
So , by comparing with the formula
we get
n = 2
So, the correct option is B. 2
Ответ:
To find the rate of change you find the difference in each of the numbers on the graph. For example, 36-32 is 4. So 28-4 is 24 and that would be the next number down. It would also match x to be 0 because since the rate of change for x was 5, if you subtract 5 from 5 you get 0. So from this we know that the coordinates would be 0,5.
From this info, the slope would be 4/5 and the y intercept or initial value would be 24