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KatRina [158]
3 years ago
14

Perform the indicated operation. PLEASEE HELPP HURRYY!! (3 + i) + (5 + 7i) = A) -2 + 6i B) 2 + i C) 8 + 6i D) 8 + 8i

Mathematics
1 answer:
Dovator [93]3 years ago
7 0

Answer:

\boxed{ \bold{  \huge{ \boxed{ \sf{8 + 8i}}}}}

Option D is the correct option.

Step-by-step explanation:

\sf{(3 + i) + (5 + 7i)}

When there is a ( + ) in front of an expression in parentheses , there is no need to change the sign.

That means, the expression remains the same.

Just remove the unnecessary parentheses

⇒\sf{3 + i + 5 + 7i}

Collect like terms and simplify

⇒\sf{3 + 5 + i + 7i}

⇒\sf{8 + 8i}

Hope I helped!

Best regards!!

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elixir [45]
-3.4, -1.5, 0, 1/2, 8.5, and 8.45
Hope this helped:))
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How do I find QS here?
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To solve this problem, let's first solve for x. Thi is easiest done by figuring what QR is in terms of x using two equations, both from different lines. 
In the first line: QR = 15 - 4x. 
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When Shanaje baby-sits her nephews, she charges $8 plus $4 per hour. If
Vlad1618 [11]
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3 0
3 years ago
If the standard deviation of a data set is 8.4, what is the variance?
Lynna [10]

Answer:

70.56

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7 0
3 years ago
If T: (x, y) → (x - 3, y + 2), then T -1: (x,y) → _____.
tatyana61 [14]

Answer:

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Step-by-step explanation:

we know that

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so

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