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Marrrta [24]
4 years ago
7

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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What is the value of the expression 4 2/5(-2.5)​
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Answer:

-0.64

Step-by-step explanation:

Given:

4[2/5(-2.5)]

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⇒ 4[2/5(-2.5)]

⇒ 8 / [-12.5]​

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7 0
3 years ago
A set of test scores are normally distributed. The mean is 100 and the standard deviation is 20. These scores are converted to s
Whitepunk [10]

Answer:

The z-scores of both the mean and the median are zero.

Step-by-step explanation:

In a normal distribution, the mean and median values will be the same, in this case, 100. Therefore, both the mean and median will have the same score.

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5 0
3 years ago
Tell whether x and y are proportional.
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Pendejo Que putas es eso
5 0
3 years ago
HELP ASAP
oksano4ka [1.4K]

9514 1404 393

Answer:

  c.  x = 7-t; y = -1/(t -7)

Step-by-step explanation:

To find the parametric equation for x, use the equation for t and solve for x.

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  x = 7 -t . . . . . . add x-t to both sides

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To find the parametric equation for y, substitute the equation for x.

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To make this match the available choices, we need to multiply numerator and denominator by -1.

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The parametric equations are ...

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3 0
3 years ago
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Answer:

480

Step-by-step explanation:

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