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11111nata11111 [884]
3 years ago
13

Perform the indicated operation and write the answer in the form a + bi. (–1 + 5i) + (3 + 7i)

Mathematics
1 answer:
pashok25 [27]3 years ago
5 0

Answer:

12i + 2

Step-by-step explanation:

Combine like terms.

-1 + 3 = 2

5i + 7i = 12i

12i + 2 is your answer.

~

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when directed to solve a quadratic equation by completing the square, Sam arrived at the equation (x-(5/2))^2= (13/4). which equ
Tasya [4]
We have the following expression:
 (x- (5/2)) ^ 2 = (13/4)
 Let's rewrite the given expression:
 x ^ 2 - 5x + 25/4 = (13/4)
 x ^ 2 - 5x + 25/4 - 13/4 = 0
 x ^ 2 - 5x + 12/4 = 0
 x ^ 2 - 5x + 3 = 0
 Answer:
 
the original equation given to Sam could have been:
 
x ^ 2 - 5x + 3 = 0
7 0
3 years ago
PLEASE HELPPPP (with steps)
yan [13]

Answer:

the answer is x=-25/56

Step-by-step explanation:

2 4/5x=-1 1/4

14/5x=-5/4

x=-25/56

7 0
3 years ago
Six people are standing in line for concert tickets. Their average age is 27. The average age of the first four people in line i
scZoUnD [109]
<span>Let the age of the 4th person be F
Sum of the 1st four in line: 4(23), or 92
Sum of 1st 3: 92 - F (excludes the 4th person's age)
Sum of the last 3 in line: 3(34), or 102
</span><span>Sum of last 2: 102 - F (excludes the 4th person's age)
Sum of all 6: 6(27), or 162 (INCLUDES 4th person's age)
We now get: F + 92 - F + 102- F = 162
- F + 194 = 162
- F = 162 - 194
- F = - 32
F, or 4th person's age = -32/-1, or 32

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

</span>
6 0
3 years ago
What is the 10th term of the geometric sequence 400, 200, 100…?
dusya [7]

1. B

2. A

3. C

4. A

5. B

6. C

7. B

Skip, 8,9,12,13,14

10. A

11. C

4 0
3 years ago
Read 2 more answers
F(x) = 5x2 + 20x - 12<br> What is the vertex for this
kifflom [539]

Answer:

10+20x-12

20x-2

X=20-2

X=18

3 0
2 years ago
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