1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ipatiy [6.2K]
3 years ago
10

What is the conjugate of 8-7i?

Mathematics
1 answer:
Natali [406]3 years ago
5 0

Answer:

8 + 7i

Step-by-step explanation:

Change the sign of the imaginary part.

The conjugate of 8 - 7i is 8 + 7i.

You might be interested in
- A phone call costs $0,58 for the first 3 minutes and $0.15
Goshia [24]
.58 + .15x = 4.78
28 minutes
8 0
3 years ago
What is the scale factor in the dilation if the coordinates of A prime are (–7, 6) and the coordinates of C prime are (–4, 3)?
olchik [2.2K]

Option A: \frac{1}{3} is the dilation factor

Explanation:

The Coordinates of the square ABCD are A(-21,18), B(-12,18), C(-12,9), D(-21,9)

Also, the coordinates of the square A'B'C'D' are A'(–7, 6), B'(-4,6), C'(-4,3), D'(-8,3)

Now, we shall determine the scale factor in the dilation if the coordinates A' and C'.

Since, the dilation is the enlargement of the image in the same shape but different size.

To determine the scale factor, let us divide A'C' by AC

Thus, we have,

\begin{aligned}A^{\prime} C^{\prime} &=\sqrt{(-4+7)^{2}+(3-6)^{2}} \\&=\sqrt{3^{2}+(-3)^{2}} \\&=\sqrt{9+9} \\&=\sqrt{18}\\&=3\sqrt{2} \end{aligned}

Also,

\begin{aligned}A C &=\sqrt{(-12+21)^{2}+(9-18)^{2}} \\&=\sqrt{9^{2}+(-9)^{2}} \\&=\sqrt{81+81} \\&=\sqrt{162}\\&=9\sqrt{2} \end{aligned}

Dividing A'C' by AC, we have,

\frac{A'C'}{AC} =\frac{3\sqrt{2} }{9\sqrt{2}} =\frac{1}{3}

Thus, \frac{1}{3} is the dilation factor

3 0
3 years ago
Read 2 more answers
PLEASE HELP!!! GIVING BRAINLIEST
Anvisha [2.4K]

Answer:Column one answers:

1: 490

2:396

3.18

4.10

Column 2:

1. 490

2.396

3.18

4.100

Column 3:

1.490

2.396

3.18

4.100

Hope this helps if you need more then just ask

7 0
3 years ago
I don’t get the second question.
tatyana61 [14]

it should be 3+(-7)  because look at the number closest to the number line, which is positive 3 then the number next to it is negative 7 because it is heading downward towards the opposing side.  

8 0
3 years ago
A self-serve car wash charges $5.81 to use its facilities, plus an additional $0.77 for each minute the customer is at the self-
Zigmanuir [339]

Answer:

C. $11.20.

Step-by-step explanation: Just times the minutes by the $0.77 cents then plus the $5.81 to the answer getting your final answer.

3 0
3 years ago
Other questions:
  • Julia has 14 pounds of nuts. There are 16 ounces in 1 pound. How many ounces of nuts does she have?
    12·2 answers
  • Performance task: A parade route must start And and at the intersections shown on the map. The city requires that the total dist
    13·1 answer
  • (PLEASE PLEASE HELP!) Describe two ways to find m ∠ 1 if m ║n. What is the measure of ∠1?
    12·1 answer
  • Write 121 raised to the one-half power equals 11 as a logarithmic function
    15·1 answer
  • Please answer the question from the attachment.
    5·1 answer
  • A box contains 2 blue cards numbered 1 through 2, and 3 green cards numbered 1 through 3. List the sample space of picking a blu
    6·2 answers
  • For every 2 male birds in a bird cage there are 5 females what is the ratio of males to females
    14·2 answers
  • Raymond has a credit card with a 21.99% APR. His balance this month is $3,000. Calculate how much interest he will pay this mont
    15·1 answer
  • I’m confused, I don’t know how to get the value
    8·1 answer
  • Jaclyn has $50 saved and earns $25 each month in allowance. Pedro has $200 saved and earns $10 a month in allowance. If they bot
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!