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Artist 52 [7]
3 years ago
11

A positive real number is added to –2i. Which could be the resulting point?

Mathematics
2 answers:
yKpoI14uk [10]3 years ago
8 0

Answer:

D

Step-by-step explanation:

Recall that a complex plane has a real axis and an imaginary axis where a real plane has its x-axis and y-axis respectively. Since the x-axis is the real axis and the y-axis is the imaginary axis, then it would have to be D.

pickupchik [31]3 years ago
6 0
I think its C im pretty sure sorry if im wrong!
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Of 450 lunches were sold at school on thursday 40% were hamburgers and the rest were pizza how many more pizza lunches were sold
Andru [333]

Answer:

270 more pizza lunches were sold.

Step-by-step explanation:

40 x 450 = 18,000

18,000 / 100 = 180

180 - 450 = 270

4 0
3 years ago
Find cos(2115°) and sin(2115°). Identify the measure of the reference angle.
ivolga24 [154]

Answer:

Cos(2115°) =1/√2

Sin(2115°) = -1/√2

Step-by-step explanation:

We have to find the values of Cos (2115°) and Sin (2115°).

Now, 2115° can be written as (23×90°+ 45°).

Therefore, the angle 2115° lies in the 4th quadrant where Cos values are positive and Sin values are negative.

Hence, Cos (2115°) = Cos(23×90° +45°) =Sin 45° {Since 23 is an odd number, so the CosФ sign will be changed to SinФ} =1/√2 (Answer)

Again, Sin (2115°) = Sin(23×90° +45°) = -Cos 45° {Since 23 is an odd number, so the SinФ sign will be changed to CosФ} = -1/√2 (Answer)

Now, the required reference angle is 45°. (Answer)

8 0
4 years ago
What times itself 3 times equals -27
Anna35 [415]

Answer:

the answer for 3 times -27 is -81

Step-by-step explanation:

hope it helped ! :)

4 0
3 years ago
Read 2 more answers
Plz answer !!! I need your help​
just olya [345]

Anything what i can do for you?

5 0
4 years ago
Graph the system of inequalities y> 2x +1
lubasha [3.4K]
The first thing to do in this case is to graph both equations
 y = 2x +1
 y = / x /
 Once graphed, you must evaluate points in the Cartesian plane that satisfy the inequations to know where the solution set is.
 For this case, the solution set is in the shaded region, or equivalently, quadrants 1 and 2.
 answer
 quadrants 1 and 2.

6 0
3 years ago
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