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Ksju [112]
3 years ago
5

Please help me answer all parts of the question in the photo.

Mathematics
1 answer:
goldenfox [79]3 years ago
3 0
z_1=4+2i\\z_2=-1+2i\\\overline(z_2)=\sqrt{(-1)^2+(2i)^2}=\sqrt{1-4}=i\sqrt{3}\\ z_1+\overline(z_1)=4+2i+\sqrt{4^2+(2i)^2}=4+2i+\sqrt{16-4}=4+\sqrt{12}+2i\\z_2+\overline(z_2)=-1+2i+\sqrt{(-1)^2+(2i)^2}=-1+2i+\sqrt{1-4}=-1+(2+\sqrt{3})i
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Please Help Me Quickly As Soon As Possible, I Have A Test. I Will Give Out Brainly.
Dima020 [189]

The equation to show the depreciation at the end of x years is

f(x) = 1500 - 200x

Data;

  • cost of machine = 1500
  • annual depreciation value = x

<h3>Linear Equation</h3>

This is an equation written to represent a word problem into mathematical statement and this is easier to solve.

To write a linear depreciation model for this machine would be

For number of years, the cost of the machine would become

1500 - 200x

This is properly written as

f(x) = 1500 - 200x

where x represents the number of years.

For example, after 5 years, the value of the machine would become

f(x) = 1500 - 200x\\f(5) = 1500 - 200(5)\\f(5) = 1500 - 1000\\f(5) = 500

The value of the machine would be $500 at the end of the fifth year.

From the above, the equation to show the depreciation at the end of x years is f(x) = 1500 - 200x

Learn more on linear equations here;

brainly.com/question/4074386

8 0
2 years ago
Last year Marta invested money in two accounts. The first account had an interest rate of 3% and the second account had an inter
KatRina [158]

The amount invested in the first account is $9,300 while the amount invested in the second account is $8,800.

<h3>How do we calculate the amount invested?</h3>

Let x represents the amount invested in the first account.

Therefore, we have:

Amount invested in the second account = x - 500

Interest income from first account = 3% * x = 0.03x

Interest income from second account = 5% * (x - 500) = 0.05x - 25

Total interest income = 0.03x + 0.05x - 25 = 719

Solving for x, we have:

0.08x = 719 + 25

x = 744 / 0.08

x = $9,300

Substituting for x, we have:

Amount invested in the second account = $9,300 - $500 = $8,800

Learn more about the amount invested here: brainly.com/question/24132106.

#SPJ1

3 0
2 years ago
Your weekly net income is $380. Your total budgeted monthly expenses $1,550.00. Do you have a surplus or a deficit balance at th
Alenkinab [10]

Answer:

Deficit

Step-by-step explanation:

This is the correct answer for me

6 0
3 years ago
Choose the correct answer in scientific notation.
vladimir2022 [97]

Answer:

B. 1.55 x 106

Step-by-step explanation:

This is an example of the distributive property. In order to turn it back to the regular form, you need to do this:

3.40

-

1.85

--------

1.55      

Don't forget to put the 106!

3.40

-

1.85

--------

1.55      x       106

You can do it in both forms and get the same answer. It depends on what the question asks for or whichever form you like best/you think is the easiest.

8 0
3 years ago
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svetoff [14.1K]
I’m sorry bc I don’t know how to solve all of them but
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