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Sladkaya [172]
4 years ago
13

Multiply and simplify.

Mathematics
1 answer:
miv72 [106K]4 years ago
8 0

Multiply and simplify (3 + i)(4 + 2i)

(3 + i)(4 + 2i) = (3*4) + (3*2i) + (4*i) + (2i*i) = 12 + 6i + 4i + 2i^2

i^2 = -1

12 + 6i + 4i + 2i^2 = 12 + 6i + 4i -2 = 10 + 10i

Use the imaginary number i to rewrite the expression:

--\sqrt{-16} \\(-1)\sqrt{(-1)16}\\(-1)\sqrt{16}i\\(-1)4i\\-4i

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77/15 as a mixed number
DIA [1.3K]

Answer:

5 2/15

Step-by-step explanation:

3 0
3 years ago
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Numbers 37 and 39. I’m not sure how to solve them
Marrrta [24]
37. 3/8 hours

You can get this by dividing 3/4 by 2. 

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8 0
3 years ago
Solve this inequality. Show your steps. <br><br> -4(3+n)&gt;-32
Delicious77 [7]

Answer:

N<5

Step-by-step explanation:

-4(3+n) > -32

-4(n+3) > -32

-(4n + 4 x 3) > -32

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(-4n - 12) +12 > -32 + 12

-4n - 12 + 12 > -20

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6 0
3 years ago
Write the quadratic function in standard form.<br><br> y = (x - 2)^2 + 4
Mrrafil [7]

Answer:

y = x^2 - 4x + 8

Step-by-step explanation:

<u>Step 1:  Factor the (x - 2)^2</u>

y = (x - 2)^2 + 4

y = x^2 - 4x + 4 + 4

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Answer:  y = x^2 - 4x + 8

8 0
3 years ago
Hello everyone!
larisa86 [58]

Answer:

y=8x-11

Step-by-step explanation:

Use Point-Slope Form

Which is y-y1=m(x-x1)

If we fit the coordinates and slope in the equation, it is y-5=8(x-2)

=y-5=8x-16

=y=8x-16+5

=y=8x-11

And so the answer of the problem is y=8x-11

5 0
3 years ago
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