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yuradex [85]
3 years ago
5

What is (7-4i)+(-2+5i)

Mathematics
2 answers:
olchik [2.2K]3 years ago
6 0
7-2 + -4i +5i
5+i
The answer is 5 plus I
Alla [95]3 years ago
5 0

Answer:

(7-4i)+(-2+5i) = 5 + i

Answer =  5 + i

Step-by-step explanation:

Group the real part and the imaginary part of the complex number

( 7 - 4i ) + (-2 + 5i )

= ( 7 - 2 ) + ( -4 + 5 ) i

Refine = 5 + i

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I need some helppp people
dsp73

We can observe that the function describing the graph is linear and so the equation is of linear nature:

y=mx+n

Numbers m and n have special names. m is called the slope, n is called y-intercept.

From the graph one can tell that the line intercepts y-axis at y = -1 that means n = -1. What about the slope you say?

The slope can be calculated using two points' coordinates that lie on the line:

m=\frac{\Delta y}{\Delta x}=\frac{-1-5}{0-5}=\frac{6}{5}

Now our line has an equation,

y=\frac{6}{5}x-1

Hope this helps.

4 0
3 years ago
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Without multiplying, tell which product is larger and why.
Mademuasel [1]

Answer:

because 6 is larger then 4

Step-by-step explanation:

up

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Blizzard [7]

The answer is D. The ones on the left are the domain. The ones on the right which the arrows point to are the range

7 0
3 years ago
8 customers entered a store over the course of 16 minutes. At what rate were the customers entering the store in minutes per cus
lilavasa [31]

Answer:

<h3>2min/customer</h3>

Step-by-step explanation:

If 8 customers entered a store over the course of 16 minutes, then;

8 customers = 16 minutes.

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Hence the rate at which the customers entering the store in minutes per customer is 2min/customer.

4 0
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there are 75 students on the sapphire team and 1/5 of them are in the band . how many students are in band?
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Answer:

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Step-by-step explanation:

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This spilts the 75 students into 5 different groups and each one has 15 which is 1/5 of the students

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