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2 years ago

What is (2i)^2? and is it a real or imaginary number?

Mathematics

2 answers:

Lunna [17]2 years ago

8 0

Answer:

Step-by-step explanation:

Distribute the 2, you get 4i.

It's imaginary because it has an i with it

Alex2 years ago

6 0

Answer:

-4, real

Step-by-step explanation:

Hi there!

‘i’ is characterized as the sqrt of -1 or, alternatively, i^2= -1

If the problem is asking us to square i, then we know that it is going to equal -1. If we distribute the exponent, we would also square the 2, making it become 4. Now that we have done that, we multiply -1 and 4 to get a final answer of -4. This would be a real number as it is not imaginary.

I hope this can help!

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What is the area of a rectangle with a length of 214 inches and a width of 234 inches?

Nostrana [21]

Given:

Length of rectangle = 214 inches.
Width of rectangle = 234 inches

To Find:

Area of rectangle.

Solution:

Using formula:

Area of rectangle = Length × Breadth

214 × 234

50,076 in²

Hence,

Area of Rectangle is <u>50,076 in</u><u>²</u>

4 0

2 years ago

Read 2 more answers

A number written in fraction form whose numerator or denominator is itself a fraction is called a complex fraction.

pickupchik [31]

<h3>Answer:</h3>

"complex"

<h3>Explanation:</h3>

The sentence you're to complete is a direct copy of the sentence at the beginning of the problem statement. Match the words and identify the one corresponding to the blank.

_____

<em>Comment on the example</em>

"Copy and paste" does not always work well on Brainly, especially when the characters being copied are not text characters. Many fractions get mangled in the process.

We suspect you intend ...

(1/3)/(4/7) = (1/3) ÷ (4/7)

In typeset form, this might be ...

$\displaystyle\frac{\left(\frac{1}{3}\right)}{\left(\frac{4}{7}\right)}$

___

Please note that the symbols "/" and "÷" and the word "over" are generally taken to mean exactly the same thing.* When math operations are involved in numerators or denominators, generally you need to enclose those numerators and denominators in parentheses.

1/3÷4/7 = 1/(3·4·7) = 1/84

(1/3)÷(4/7) = (1/3)·(7/4) = 7/12

___

* Some web sites treat them differently. Sometimes "÷" is taken to mean "the quantity everything that comes before the symbol '÷' divided by the quantity everything that comes after the symbol". Sometimes the word "over" is intended to mean the same thing. This usage for ÷ and "over" is non-standard, so it is best to use parentheses to clarify intent.

5 0

4 years ago

Solve for x please

svlad2 [7]

Answer: 53°

Step-by-step explanation: If two parallel lines are cut by

a transversal, then same-side interior angles are supplementary.

So if we know one of our angles measures 127,

our other angle will measure 180 - 127, which is 53.

So x is 53 degrees.

Remember, whenever you have two parallel lines cut by a transversal,

same-side interior <'s are supp. or the sum of their measures is 180 degrees.

3 0

3 years ago

ALFREDO LIKES SOCCER

Grace [21]

Answer:

yoo was good alfredo can you mark me as brainlist PLZ

Step-by-step explanation:

that be big favor

6 0

3 years ago

Catherine Chao, Director of Marketing Research, needs a sample of households to participate in the testing of a new toothpaste p

sleet_krkn [62]

Answer:

Convenience sampling.

Step-by-step explanation:

In Statistics, sampling can be defined as a process used to collect or select data (objects, observations, or individuals) from a larger statistical population using specific procedures.

There are various types of sampling used by researchers and these are;

1. Random sampling.

2. Systematic sampling.

3. Stratified sampling.

4. Cluster sampling.

5. Quota sampling.

6. Convenience (opportunity) sampling.

Convenience sample can be defined as a sampling technique in which the representatives to be used are easily accessible. For example, a researcher using a social media poll such as Twitter polls.

In this scenario, Catherine Chao, Director of Marketing Research, chooses thirty-six of her closest friends to participate in the testing of a new toothpaste package. Thus, Catherine's sample is a convenience sampling.

4 0

3 years ago