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patriot [66]
3 years ago
14

Simplify complex numbers:add n subtract complex numbers(3-5i) - (8-2i) ​

Mathematics
1 answer:
IgorLugansk [536]3 years ago
5 0

Answer:

-5-3i

Step-by-step explanation:

3-8= -5

-5-(-)2i

-5+2i=-3i

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The width of a rectangle is 5 meters less than its length. The area is 84 square
VARVARA [1.3K]

Answer:

12 and 7 meters

Step-by-step explanation:

The area is 84 square meters and the width is 5 meters less than the length. 12 is the length and 7 is the width. 7 is 5 less than 12, and 12*7=84.

The length is 12 and the width is 7

7 0
2 years ago
A juice drink filling machine, when in perfect adjustment, fills the bottles with 12 ounces of drink on an average. Any overfill
gavmur [86]

Answer:

b. the average is not equal to 12 ounces.

Step-by-step explanation:

a and is incorrect because being equal to 12 ounces is what we want.

c  - we want to look for greater than 12 as well as less than.

5 0
3 years ago
Last year, the numbers of skateboards produced per day at a certain factory were normally distributed with a mean of 20,500 skat
alisha [4.7K]

Answer:

This can be solved by using the empirical rule for a normal distribution.

Step-by-step explanation:

A. The number of skateboards given is one standard deviation above the mean. Approximately 68% of the data points lie within the range plus and minus one standard deviation of the mean. Therefore the required percentage is:

68 + 16 = 84%.

B. The given number of skateboards is two standard deviations above the mean. Approximately 95% of the data points lie within the range plus and minus two standard deviations of the mean. Therefore the required percentage is:

5/2 = 2.5%

C.The given number of skateboards is one standard deviations below the mean. Therefore the required percentage is:

16%.

8 0
3 years ago
Nicholas wrote the steps below to
Inessa05 [86]

Answer:

He does not divide the numerator and the denominator by the same number. Nicholas divides 20 by 5 and 30 by 6. He ought to have divided 30 by 5 as well and then simplified.

P.S. Nicholas should have just divided both 20 and 30 by 10 to simplify in one step

7 0
2 years ago
bridget has swimming lessons every fifth day and diving lessons every third day. If she had a swimming lesson and a diving lesso
lara [203]
She had both on May 5

swimming lessons every 5th day
5,10,15,20

diving lessons every 3rd day...
3,6,9,12,15

so they both have a common multiple of 15

so fifteen days after May 5 = May 20 <==
8 0
3 years ago
Read 2 more answers
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