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just olya [345]
3 years ago
13

What is the sum of 12 – 5i and –3 + 4i?

Mathematics
1 answer:
Jobisdone [24]3 years ago
5 0

Answer:

B. 9 - i

Step-by-step explanation:

Combine the real and imaginary parts in numbers 12 - 5i and -3 + 4i

(12 + 5i) + (-3 + 4i)

12 - 3 + (-5 + 4)i

Add 12 to -3. Add -5 to 4.

9 + (-i)

9 - i

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<h3>What is a graph?</h3>

In Mathematics, a graph can be defined as a type of chart that is typically used for the graphical representation of data points or ordered pairs on both the horizontal and vertical lines of a cartesian coordinate, which are the x-axis and y-axis respectively.

Generally speaking, the graph of any proportional relationship is characterized by a straight line with the data points passing through the origin (0, 0) because as the values on the x-axis (x-coordinate) either increases or decreases, the values on the y-axis (y-coordinate) increases or decreases simultaneously.

In this context, we can reasonably infer and logically deduce that the relationship between x-values and y-values in the graph of y = -2x is proportional as it passes through the origin (0, 0).

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7 0
1 year ago
Solve the equation. 5/6x - 4 = -2
Agata [3.3K]

Answer:

A

Step-by-step explanation:

Given

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x = \frac{12}{5} = 2 \frac{2}{5} → A

8 0
3 years ago
I GIVE THANKS AND 5 STARS!!<br> take a look that the screenshot, anyone know the answer??
morpeh [17]
Substitute each value until the answer is correct

a. 1 = -4 x -5 -1
1 does not equal 19
b. 15 = -4 x 4 -1
15 does not equal -17
c. -5 = -4 x 1 -1
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just to make sure the last answer is incorrect
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4 0
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Which phrase best describes the scatterplot below?
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Answer:

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Also, we also see that the data points represented on the scatter plot are clustered more closely along the slope, showing strong negative correlation.

Therefore, the phrase that best describes the scatter plot is: strong negative correlation.

8 0
3 years ago
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icang [17]
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3 0
3 years ago
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