B is the answer I took the test
Assuming the choices are:
-7
2+sqrt(3)
4+9i
pi
The correct answer is (4+9i). Complex numbers include an imaginary component, signified by i.
-7 is an integer.
2+sqrt(3) and pi are both irrational numbers, but they are still real numbers (so not usually called complex).
19. No
20. No
21. Yes
23. 1.8 miles
<h2>
Answer:</h2>
Shown below
<h2>
Step-by-step explanation:</h2>
First of all, we need to plot the equation:
The graph of this equation is a parabola. The vertex of this parabola lies on the point (0, 1) and the x-intecepts are the points (-1, 0) and (1, 0). But the problem asks for the graph of<em> y greater than or equal to -x^2 + 1, </em>that is, the inequality:
To find this, we choose a point on the Cartesian plane, say, (0, 0) and let's take a look to the inequality:
So the region does't contain point (0, 0), therefore the graph is the one shown below.
B = -9/2
Hopefully this helps and this is what you're looking for.