Answer:
c
Step-by-step explanation:
quadratic formula: -b±√b²-4ac/ 2a
a= -10
b= 12
c= -9
-12±√144- 4(-10)(-9)/ 2(-10)
-12±√144- 360/ -20
-12±√-216/-20
6±3i√6/ 10
simplify: 3/5± 3i√6/10
Answer:
with what do u need help with
Answer:
Yes. (see below)
Step-by-step explanation:
First, find the slope of the line. You can do that by using the slope formula:
y2 - y1
m = ----------
x2 - x1
Now, choose any two points from the line to plug in. I'm using the points (0, 3) and (2, 4).
4 - 3
m = ------
2 - 0
1
m = --- = 1/2
2
Now, to simplify your situation, you can use the slope-intercept formula. To use this, you first need to find the slope and y-intercept.
The y-intercept is where the line meets the y-axis, which is (0, 3), so the y-intercept is 3.
Now, plug them in:
y = mx + b
y = 1/2x + 3
To see if a specific point is on this line—which, in this case, is (20, 13), plug them in and simplify to see if it's true:
13 = 1/2 (20) + 3
13 = 10 + 3
13 = 13
This is true, so the point (20, 13) is on this line.
Answer: Believe you can and you're halfway there
Have a great day!
I don’t have the answer but I’m just spreading positivity.
Answer:
Step-by-step explanation:
To find the inverse of a function, take your equation and <u>switch the "x" and "y" variables. Then, isolate "y"</u>.
Take your equation
y = 2x - 11
Switch "x" and "y" variabales
x = 2y - 11
Isolate "y", meaning to move it to the left, and everything else to the right. When moving a number, do its reverse operation to both sides of the equation.
x = 2y - 11 Move "-11" first. It's reverse is +11
x + 11 = 2y - 11 + 11 Do the reverse to both sides
x + 11 = 2y The reverses cancel out
In "2y", 2 is multiplying with y. The reverse of multiplying is dividing.
Divide both sides by 2
Move "y" to the left for standard formatting
Inverse of y = 2x - 11