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pishuonlain [190]
3 years ago
15

What are characteristics of complex numbers

Mathematics
1 answer:
inna [77]3 years ago
3 0
Complex numbers are numbers that can be expressed in the form a + bi, a and b are real numbers whereas I is the imaginary unit that satisfies the equation I^= -1. In this expression, a is referred as the real part of the complex number, b is referred as the imaginary part.
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Simplify the ratio:<br> 2 days: 2 weeks<br> [Write the answer without any units of measurement.]
Marysya12 [62]

Answer:

1:7

Step-by-step explanation:

2 days = 2, 2 weeks = 14 days

2:14

u can divide it by 2

becomes 1:7

8 0
3 years ago
Amanda and Mary each have a box of popcorn.
Schach [20]

Answer:

Amanda's box volume is 70 cm^3 greater than Mary's

Step-by-step explanation:

Find and then compare the volumes of the two boxes:

Amanda's:  10*10*13.5 cm^3 = 1350 cm^3

Mary's:  8*8*20 = 1280 cm^3

Amanda's box volume is 70 cm^3 greater than Mary's.

4 0
3 years ago
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grin007 [14]

Answer:30

Step-by-step explanation:

3 0
3 years ago
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Which of the following are true about regression with one predictor variable (often called "simple regression")? Check all that
AfilCa [17]

Answer:

<h3>A. The slope describes the amount of change in Y for a one-unit increase in X .</h3><h3>B. The regression equation is the line that best fits a set of data as determined by having the least squared error.</h3>

Step-by-step explanation:

In statistics, linear regression is a analysis we do to describe the relationship between two variables. With this study, we pretend to know if there's a positive or negative correlation between those variables, if that correlation is strong or weak.

In a linear regression analysis, we modeled the data set using a regression equation, which is basically the line that best fits to the data set, this line is like the average where the majority of data falls. That means choice A is right.

When we use linear equations, we need to know its characteristics, and the most important one is the slope, which is the ratio between the dependent variable and the independent variable. Basically, the slope states the unit rate between Y and X, in other words, it states the amount of Y per unit of X. That means choice B is correct.

Therefore, the correct answers are A and B.

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3 years ago
-11-(-10) what is the value
sertanlavr [38]

The answer is -1 , because when you add a negative number to a positive number the negative number will subtract , and vise versa.  

7 0
3 years ago
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