punkee5505
29.05.2020 •
Mathematics
DETERMINA EL CONCEPTO EN CADA CASO
1. ( 37 + 20i )/(2 + 5i ) =
2. ( 31 + 12i )/( 8 + i ) =
3. ( 5+ 3i )/( -5 + 4i ) =
4. ( 27 - 34i )/( -2 - 5i ) =
5. ( 5 + 3i )/( 3 - i ) =
6. ( 7 - 4i )/(2 + i ) =
Solved
Show answers
More tips
- C Computers and Internet Thin Client: What It Is and Why You Need It?...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
- D Dating, Love, Relationships How Long Can Love Last?...
- A Auto and Moto Mastering One-Movement Parking: All You Need to Know...
- C Computers and Internet How to Properly Order Clothing from International Online Stores...
- H Health and Medicine Headache: A Comprehensive Guide to Treatment...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- A Auto and Moto Discovering the Leader: What is the Most Expensive Car in the World?...
- F Food and Cooking How to Quickly Put your Child to Sleep?...
- C Computers and Internet How to Create a Website for Free and Easy?...
Answers on questions: Mathematics
- M Mathematics Apply the distributive property to factor out the greatest common factor of 85 + 20....
- M Mathematics The diagram shows the plans for the triangular park. what is the perimeter of the park? the perimeter is + feet....
- M Mathematics Members of a lacrosse team raised $2331.50 to go to a tournament. They rented a bus for $1224.50 and budgeted $61.50 per player for meals. Write and solve an equation which can...
- C Computers and Technology In ANSI standard C(1989) code - this is what we are teaching- declarations can occur in a for statementas in for(int i;i 10; i++0. True O False...
- H History The head of the mycenaean civilization was known as a the ancient greek title given to persons of nobility...
Ответ:
29, 66, 22
Step-by-step explanation:
Let a, b, c represent the three numbers, in order. The problem statement tells us ...
... a + b + c = 117
... c = a - 7
... b = 3c
Solving these equations
There are a variety of ways that three equations in three unknowns can be solved, including elimination, matrix methods, Cramer's rule, and substitution.
We can use substitution to find the values. Using the third equation in the first, we have ...
... a + 3c + c = 117
... a + 4c = 117
Now, using the second equation to substitute for c in this, we have
... a + 4(a -7) = 117
... 5a -28 = 117 . . . . simplify
... 5a = 145 . . . . . . add 28
... a = 29 . . . . . . . . divide by 5
Using the second equation, ...
... c = 29 -7 = 22
Using the third equation, ...
... b = 3·22 = 66
The three numbers are 29, 66, and 22.