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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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4 0
3 years ago
This is 4 questions.
jeka94
1) a. 15% decrease
2) a. $79.20
3) b. 14.3% increase
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#1 explanation:
1435 - 1220 = 215
215/1435 = 0.1498
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#2 explanation:
220 x 0.6 = 132
220-132=88
88 x 0.1 = 8.8
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#3 explanation:
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#4 explanation:
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3 years ago
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Can someone help me? It's urgent and thank you!
Irina-Kira [14]

Answer:

option A

Step-by-step explanation:

\frac{x+ 3}{12x} \ \cdot \ \frac{4x}{x^2 +x - 6}\\\\= \frac{x+ 3}{12x} \ \cdot\ \frac{4x}{x^2 +3x - 2x - 6}\\\\= \frac{x+ 3}{12x} \cdot \frac{4x}{x(x + 3) -2(x+3)}\\\\= \frac{x+ 3}{12x} \cdot \frac{4x}{(x + 3)(x -2)}\\\\= \frac{1}{12x} \ \cdot \ \frac{4x}{(x - 2)} \ \ \ \ \  \ \ \ \ \ \ \ \ \ \ \ \ \  \\\\= \frac{1}{3} \ \cdot \ \frac{1}{(x - 2)}\\\\= \frac{1}{3(x - 2) }

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3 years ago
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ale4655 [162]
The solution is x<5
so
C,E,F, and G

4 0
4 years ago
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