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vaieri [72.5K]
4 years ago
8

Which of the following is a complex number?

Mathematics
1 answer:
Olin [163]4 years ago
3 0

Answer:

The correct answer is option C , 4 + 9i

Step-by-step explanation:

A complex number is the one which has a real number and an imaginary number.

In all the example given , option C 4 + 9i has "i" which signifies the imaginary number which nothing but a negative square root.


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Mrs. Crosby had 350 sheets of paper. She used 8 sheets of paper for a craft. She then gave each student 4 sheets of paper. Which
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Find value of x such that the data set has a mean of 105: 99, 119, 106, 112; 108
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I'm assuming that x is part of the data set, and, with x, the mean equals 105. To find the value of x, you must add all the data values together to get 544+x (you still don't know what x equals). Then put 544+x over how many days values there are, including x (there are 6). You should have 544+x/6. Now, as this is how you would calculate the mean if you knew what x was equal to, you must set it equal to the mean, since you know what it is (105). You should now have 544+x/6 = 105. You have your equation set up--now you just have to solve it. I would multiply by 6 on both sides to get rid of the 6 on the left side. You would then have 544+x = 630. I would finally subtract 544 from both sides to get x = 86. Your final answer is x = 86.
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3 years ago
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Drupady [299]

Answer: The answer is Yes. A square is a rectangle because it possesses all the properties of a rectangle. These properties are: Interior angles measure 90∘ each.

Explanation:

Definition of a Rectangle:

A 4-sided flat shape with straight sides where all interior angles are right angles (90°).

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Definition of a Square:

A 4-sided flat shape with straight sides where all interior angles are right angles (90°).

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As you can see the first part of the definition of a square and rectangle are the same.

However, a square is a special case of a rectangle.

When all 4 sides of a rectangle are equal then the rectangle is a square.

So, a rectangle can also sometimes be a square.

 

Step-by-step explanation:

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3 years ago
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Answer:

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An arithmetic sequence is one that involves multiplication or division. For example, "Jon receives 5 dollars each week. If he waits for 5 months, how much money will he have? Honestly, all you have to do is think about the formula. x * 5. x would be the number of weeks. 

I know my answer is not as good as the verified one, but it is simpler and easier to understand. I apologize if it isn't good enough. 
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