Ask question

Ask question

All categories

Brilliant_brown [7]

3 years ago

12

How to simplify the complex number (9 - 2i) - (-2 + 6i) ?

1 answer:

matrenka [14]3 years ago

3 0

$(9 - 2i) - (-2 + 6i) \\ \\ 9 - 2i + 2 - 6i \\ \\ (9+2) + (-2i - 6i) \\ \\ 11 - 8i \\ \\ Answer: \fbox {11 - 8i}$

You might be interested in

If a line contains the point (0, -1) and has a slope of 2, then which of the following points also lies on the line?

enot [183]

Answer:

(1,1)

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Find a rational number between the two points shown.

dexar [7]

Answer:

Is it any of the rational numbers? There are an infinite number of rational numbers. Rational numbers are any numbers that can be written as a fraction. All the integers between those two points (-2, -1, 0, etc.) are all rational. Any of the numbers between the points would be too. 1/2, 1/3, 2 1/3, etc.

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

In the diagram, which pair of angles are vertical angles?

dusya [7]

Angles 1 and 3, angles 2 and 4, angles 5 and 7, and angles 6 and 8. They are also congruent, because vertical angles are congruent.

5 0

3 years ago

There are 70 students in the school band. 40% of them are sixth graders, 20% are seventh graders, and the rest are eighth grader

Anon25 [30]

Answer:

The number of students in the school band = 70

40% of students in the school band are sixth graders.

20% of students in the school band are seventh graders.

We have to find the number of band members that are sixth graders.

The number of sixth graders in school band are:

$40\% of 70$

$0.40 \times 70$

$28$

Therefore, there are 28 band members that are sixth graders.

4 0

4 years ago

The student at Abu 's School voted for a new school mascot. 60% of the students voted to be the Falcons. If there are 595student

aniked [119]

Answer:

<h2><u>Given</u><u> </u><u>:</u><u>-</u></h2>

There are 595 total students in the school .
60% of the total students voted to be the falcons .

$\large\bf{\underline{To \:find }}$

How many students voted not to be in falcon ?

$\large\bf{\underline{Therefore }}$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎⟹ 100 - 60 = 40

40% of the total students voted not be in falcon

$\large\bf{\underline{Hence }}$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎⟹ 40% of 595

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $= \frac{40}{100} \times 595$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $=2 \times 119$

‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎‎‎ ‎ ‎ $= 238$

$\bf{\underline{So , 238 \: students \:voted \:not\:to \:be\:in\: falcon }}$

7 0

3 years ago