All categories

3 years ago

Multiply (6 + 5i)(4 - 4i)

Mathematics

2 answers:

Anika [276]3 years ago

5 0

Answer:

44-4i

Step-by-step explanation:

Komok [63]3 years ago

4 0

(6 + 5i)(4 - 4i)
24 - 24i + 20i - 20i^2 ( substitute i^2 to -1)
24 - 4i + 20
44 - 4i

You might be interested in

He first draft of the civil rights act was proposed by

maksim [4K]

The first draft of the civil rights act was proposed by 3. John F. Kennedy

7 0

3 years ago

Mateo reproducira una foto que mide 5 cm por lado a una escala de 3/4

Aneli [31]

the question in English

Mateo will reproduce a photo measuring 5 cm per side on a scale of 3/4

How much will the square side of the copy measure?

Will the size of the copy be larger or smaller than the original?

we know that

the scale factor is equal to $\frac{3}{4}$

Let

x----------> the original length side

y--------> the copy length side

$y=\frac{3}{4}*x$

we have that

$x=5\ cm$

substitute the values

$y=\frac{3}{4}*5=3.75\ cm$

therefore

<u>the answer Part a) is </u>

the length side of the copy measure is $3.75\ cm$

Part b)

we know that

the size of the original photo is------> $5*5=25\ cm^{2}$

the size of the copy is------> $3.75*3.75=14.06\ cm^{2}$

$14.06\ cm^{2} < 25\ cm^{2}$

therefore

<u>the answer part b) is</u>

The size of the copy be smaller than the original

3 0

3 years ago

A newspaper provided a "snapshot" illustrating poll results from 1910 professionals who interview job applicants. The illustrat

Vedmedyk [2.9K]

Answer:

The correct option is A) Confidence level

Step-by-step explanation:

Consider the provided information.

From the provided information we get the sample size is 1910 professionals

The illustration showed that 26% of them said the biggest interview turnoff is that the applicant did not make an effort to learn about the job or the company. That's mean the point estimate is 26%

The margin of error was given as plus or minus 3±3 percentage points. The margin of error is the confidence interval which is plus or minus 3±3.

Now consider the provided option:

The correct option is A) Confidence level

Because from the above information we know the point estimate is 26% Sample size is 1910 and the confidence interval is 3±3.

5 0

3 years ago

Select all the expressions whose value is larger than 100.

scZoUnD [109]

Answer:

120% of 100. 20% of 800. 500% of 400. 1% of 1,000

Hope this helps :)

4 0

3 years ago

What is the solution to the inequality - 6x + 5 > -1

ExtremeBDS [4]

[ Answer ]

$\boxed{X \ < \ 1}$

[ Explanation ]

Solution To Inequality: - 6x + 5 > -1

-------------------------------------

Subtract 5 From Both Sides

- 6x + 5 - 5 > -1 - 5

Simplify

-6x > -6

Multiply Both Sides By -1 (Reverse Inequality)

(-6x)(-1) < (-6)(-1)

Simplify

6x < 6

Divide Both Sides By 6

$\frac{6x}{6}$ < $\frac{6}{6}$

Simplify

X < 1

$\boxed{[ \ Eclipsed \ ]}$

4 0

3 years ago