4 years ago

Simplify 9i(2+3i)

Mathematics

2 answers:

Basile [38]4 years ago

8 0

Answer:

9i(2+3i) = -27+18i

Step-by-step explanation:

Distribute to get → 9i·2+9i(3i)

Multiply 2 and 9 → 18i+9i(3i)

Simplify → 18i+27i²

Simplify → 18i-27

Reorder → -27+18i

viktelen [127]4 years ago

3 0

Simplify 9i(2+3i):
9i×2=18i
9i×3i=27i

18i+27i

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Answer:

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Step-by-step explanation:

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3 years ago

What is 3.754×10^5 than round it to the tenth

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Answer:

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Step-by-step explanation:

3.754*10^5
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3 years ago

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What is the solution to the equation 1/2 x + 3 = 2/3 x + 1

Leni [432]

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$\frac{1}{2} x + 3 = \frac{2}{3} x + 1 \\$

Subtract sides 3

$\frac{1}{2} x + 3 - 3 = \frac{2}{3} x + 1 - 3 \\$

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Multiply sides by 6

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Negatives simplifies

$x = 12$

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CHECK :

$\frac{1}{2} (12) + 3 = \frac{2}{3} (12) + 1 \\$

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Thus the solution is correct .

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3 years ago

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Sonja [21]

Answer:

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Step-by-step explanation:

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3 years ago

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Vedmedyk [2.9K]

Answer:

(4, 18)

Step-by-step explanation:

We can just pluck the x values into the equation: y = 5x -1 to see if the y values fit.

1. y = 5(4) - 1

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2. y = 5(3) - 1

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3. y = 5(0) - 1

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4. y = 5(2) - 1

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= 9 (Yep, same as option)

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3 years ago