x² + 7x - 4 = 0
a = 1, b = 7, c = -4
x = [-b +/- √(b² - 4ac)]/2a
= [-7 +/- √(49 + 4)]/2
= (-7 +/- √53)/2
X=5
90°-50°=40°
5x+15=40°
5x=25°
x=5
Answer:
Step-by-step explanation:
given is a differntial equation in parametric form as
We can find dy/dx by dividing y' by x'
(By separating the variables and integrating)
C is arbitrary constant
When x=-2, y =-2
Substitute to get
So solutoin is
is the solution
Answer: D.
Step-by-step explanation:
The inverse of a function is found by switching the x and the y in the equation and solving for the new y. Therefore, when you have a function plotted on an x/y coordinate plane, you can find its inverse by switching the x and y coordinates and plotting the new points. This process makes the function and the inverse be symmetrical about the line y = x. Your choice is C.
