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
Elina [12.6K]
3 years ago
8

(3+5i)(3-5i) please show work!

Mathematics
1 answer:
Alexxandr [17]3 years ago
5 0

Answer:

34

Step-by-step explanation:

(3 + 5i)(3 - 5i) = 9 - 25i^2

because i^2 = -1    9 - 25i^2 = 9 - 25x-1 = 34

hope this helped

You might be interested in
To cover A rectangle region of her yard penny needs atleast 170.5 square feet of sod. The length of the region is 15.5 feet. Wha
stiks02 [169]
The area needed is at least 170.5 ft².

Let w  =  the width of the rectangular area.
Because the length is 15.5 ft, therefore the calculated area should be at least 170.5 ft². That is
(15.5 ft)*(w ft) ≥ 170.5 ft²
w ≥ 170.5/15.5
w ≥ 11 ft

Answer:  w ≥ 11 ft
7 0
3 years ago
Simplify 6 over square root 8?
Serhud [2]

6/sqrt(8)= 2.121320344

8 0
3 years ago
Read 2 more answers
576 is what percent of 800?
aleksley [76]
72 percent.
Divide 576 into 800 to get 72%
8 0
3 years ago
Read 2 more answers
What is 34 + 56 x 34 and have a great day ?
Kruka [31]

Answer:

1938

Step-by-step explanation:

For this, you will need to use order of operations. You would need to multiply 56 and 34 to get 1904 first, because multiplication comes before addition.

Remember to use PEMDAS.

3 0
3 years ago
Read 2 more answers
) Sarah donated one-tenth of her salary to an orphanage, one-third of her salary is spent on food, one-fourth of salary on rent
AleksAgata [21]

Answer:

₹ 4000

Step-by-step explanation:

Sarah's salary =₹ 30000

  • one-tenth of her salary to an orphanage= 1/10*₹ 30000= ₹ 3000
  • one-third of her salary is spent on food= 1/3*₹ 30000= ₹ 10000
  • one-fourth of salary on rent and electricity =1/4*₹ 30000= ₹ 7500
  • one-twentieth of her salary on the telephone= 1/12*₹ 30000= ₹ 2500
  • donated some amount to the Prime Minister's relief fund = x
  • She was left with ₹ 3000.

x= ₹ 30000- (₹ 3000+₹ 10000+₹ 7500+₹ 2500+₹ 3000)= ₹ 4000

8 0
3 years ago
Other questions:
  • What value for x will make the equation true?<br> -3 (7x - 5) = 87 + 3x
    10·2 answers
  • Diastolic blood pressure is a measure of the pressure when arteries rest between heartbeats. Suppose diastolic blood pressure le
    12·1 answer
  • The second of two numbers is 3 less than twice the first. Their sum is 36. Find the numbers.
    7·1 answer
  • If 3x+20=2y and x+5=y show that (2,7) is a solution solve by substitution. PLEASE ANSWER ME
    7·2 answers
  • The height and radius are the same in both cylinders. Which cylinder has the greatest volume?
    11·1 answer
  • 360 miles in 6 hours
    10·2 answers
  • What is the nth term rule of the linear sequence below?<br> 13, 7, 1, -5, -11,...
    11·2 answers
  • Solve the equation.<br><br> −10=−b4
    11·2 answers
  • 8. Solve for x. Round to the nearest hundredth If necessary.
    10·1 answer
  • For the basic function f(x) = x, which conclusion can you not make about f(x) and 0.5f(x)?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!