All categories

2 years ago

Find the sum of -2 + i and its complex conjugate. Write your answer in the form a + bi.

Mathematics

1 answer:

Anuta_ua [19.1K]2 years ago

7 0

Answer:

- 4

Step-by-step explanation:

The conjugate of - 2 + i is - 2 - i, thus

- 2 + i + (- 2) - i

= - 2 + i - 2 - i ← collect like terms

= - 4 ← in the form a + bi with b = 0

You might be interested in

(-13xy+2y)+(2x-5xy-15y)

Arturiano [62]

Answer:-18xy+2x-13y

Step-by-step explanation: combine like terms

3 0

2 years ago

Read 2 more answers

A store has apples on sale for $5.00 for 2 pounds. If an apple is approximately 5 ounces, how many apples can you buy for $30.00

jeyben [28]

R $30.00. Since 1 pound = 16 ounces, so there are about apples in each pound. You can buy approximately apples for $3
r $30.00? Complete the explanation. The cost per pound of the app

8 0

3 years ago

the tempature dropped 8 degrees between 6:00 p.m. and midnight. The tempature at midnight was 26 degreesF. Write and solve an eq

sashaice [31]

D=degrees at 6

26-8=d
d=18

3 0

3 years ago

Read 2 more answers

Ezra enjoys gardening.

svlad2 [7]

Answer:

Ezra can plant 8 sunflowers

Step-by-step explanation:

0.7S + 0.5L < 11

0.7S + 0.5(10) < 11

0.7S + 5 < 11

0.7S < 6

6 ÷ 0.7 = 8.5

7 0

3 years ago

5 1/6 + (7 1/3)l <60

agasfer [191]

Answer:

$l$

Step-by-step explanation:

Given the inequality

$5\dfrac{1}{6}+7\dfrac{1}{3}l$

First, convert mixed numbers to improper fractions:

$5\dfrac{1}{6}=\dfrac{5\cdot 6+1}{6}=\dfrac{31}{6}\\ \\7\dfrac{1}{3}=\dfrac{7\cdot 3+1}{3}=\dfrac{22}{3}$

Now the inequality looks like

$\dfrac{31}{6}+\dfrac{22}{3}l$

Multiply it by 6:

$\dfrac{31}{6}\cdot 6+\dfrac{22}{3}l\cdot 6$

7 0

3 years ago