Answer:
x
=
−
2
±
√
10
3
Step-by-step explanation:
If <em>z</em> ⁷ = 128<em>i</em>, then there are 7 complex numbers <em>z</em> that satisfy this equation.
(where <em>n</em> = 0, 1, 2, …, 6)
The solutions of the equations are the point of intersection of the equations
The solutions are located at points (-2,7) and (1,1)
<h3>How to determine the solutions?</h3>
The equations are given as:
y = –2x + 3 and y = x2 – x + 1
Next, we plot the graph of both equations
From the graph of the equations (see attachment), we have the solution to be:
(x,y) = (-2,7) and (1,1)
Hence, the solutions are located at points (-2,7) and (1,1)
Read more about system of equations at:
brainly.com/question/14323743
Together they equal 90 degrees.
Equation:
(0.1x - 22) + (0.3x - 54) = 90
Open parenthesis and simplify:
0.4x -76 = 90
0.4x = 166
DIvide:
Your final answer is x= 415
Hope this helps!