Answer:
D
Step-by-step explanation:
Given a quadratic equation in standard form : ax² + bx + c = 0
We can solve for x using the quadratic formula
x² + 2x + 9 = 0 ← is in standard form
with a = 1, b = 2 and c = 9
x = ( - 2 ± 
) / 2
= ( - 2 ± 
) / 2
= (- 2± 
) / 2)
= (- 2 ± 
) / 2
= ( - 2 ± 4i
) / 2
= 
± 
= - 1 ± 2i → D
When you have a set of data points and you want to get a model out of it, you do data fitting. The first thing to do is plot the points using a scatter plot type of chart as shown in the picture. I used MS Excel as a tool for data fitting. On the left side of the picture, I used linear fitting. Then, it gives you the linear equation y=0.2907x + 2.2643. It has a correlation coefficient, R^2, of 0.9595. This measures how good your data fits the model equation. The closer it is to 1, the better. However, it is rare to get 1 because that is very ideal. A R^2 of 0.9595 is very satisfactory already. But if you want an even better model, the right side of the picture shows data fitting on a quadratic equation with an equation of y=0.0209x^2 +0.506x+2.0232 with R^2 of 0.9992.
Answer:
y = mx + b
therefore, the equation is y = -2/3x - 1
the -2/3 got the x because it is the slope and if you look at the formula, it tells you.
y-intercept is the starting point (b)
Step-by-step explanation:
Answer
5=false
6=false
last one=c!!
Step-by-step explanation:
Well in order to find the congreunt angle you have to meuseres the angles because congruent means the sme thing as if you move it so yes i think that they are congruent
