Answer:
An i is an imaginary value. So 7i is the imaginary part and 9 is the real part.
Hope this helps!!
Answer:
The first graph shows a slope of 3.
Step-by-step explanation:
If the slope is 3, it's actually 3/1 because of rise/run. So you find any point on the graph that's directly between two lines, like (-1,-5). Since the line is positive, you would go right one and up three. Then you see if that point is directly between two lines. The next point is (0, -2). If you did the same on the second graph, it wouldn't match up.
Answer: x=2π/3 and x=4π/3
Step-by-step explanation:
The equation we have is 
. All we have to do is get cosine alone to find the 2 values of x.
Now that we have our cosine left, we can use our unit circle to figure out when does cosx=-1/2. Cosine is the x value of the coordinate.
x=2π/3
x=4π/3
Answer:
y=3
Step-by-step explanation:
you times 2 and 2 together and it give you 4
Answer:
The answer is incorrect; the plus sign should be a minus sign (apex)
Step-by-step explanation:
