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DerKrebs [107]
2 years ago
6

Help Please. Can't seem to understand how to do this. I have tried and watch over 5 videos. Can't seem to get it.​

Mathematics
1 answer:
Snezhnost [94]2 years ago
7 0

Answer:

The solutions are the following:

  • z=2(cos(π6)+isin(π6))=√3+12i

  • z=2(cos(2π3)+isin(2π3))=−1+i√3

  • z=2(cos(7π6)+isin(7π6))=−√3−12i

  • z=2(cos(5π3)+isin(5π3))=1−i√3

<em>hope this helps!! :) --Siveth</em>

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Mnenie [13.5K]

Answer:

c) x= 15

d) x= 5

Step-by-step explanation:

c)4x + 5+ 7x +10=180

solve it like usually

for d) 3x + 15+12x=90

8 0
3 years ago
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180 euros to exchange rate 1.2 to the pound
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Your answer is 138.61440

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3 years ago
A tech company bought a number of computers for its employees: 66 costing \$1600$1600 each, 44 costing \$1200$1200 each, and yy
daser333 [38]

Answer:

5

Step-by-step explanation:

A tech company bought a number of computers for its employees: 6 costing $1600 each, 4 costing $1200 each, and y costing $900 each, where y is a positive odd integer. what is the greatest possible value of y

Solution:

The median of a group of numbers is the middle number when the group of numbers have been arranged either in ascending of descending other. The median of an even group of numbers is the average of the two most middle most numbers while the median of an odd group of numbers is the middle number.

Since there are 6 computers costing $1600, 4 computers costing $1200 each and y computers costing $900 each. Since y is odd, hence y + 6 + 4 would be odd and the median would be the middle number.

Given that the median price = $1200, this means that the middle of the group of numbers is $1200

900, 900, ..., 1200, 1200, 1200, 1200, 1600, 1600, 1600, 1600, 1600, 1600

Since y is odd, for the median price to be $1200, y has to be 3 or 5.

If y = 3:

900, 900, 900, 1200, 1200, 1200, 1200, 1600, 1600, 1600, 1600, 1600, 1600

median = $1200

If y = 5:

900, 900, 900, 900, 900, 1200, 1200, 1200, 1200, 1600, 1600, 1600, 1600, 1600, 1600

Median = $1200

Therefore the greatest possible value of y is 5

5 0
3 years ago
John mows 247 square feet of lawn per minute. how many square yards of lawn does he mow per hour?
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1647. 1 hour=60 minutes. John can mow 247 square feet per minute, so he can mow 60*247=14820 square feet per hour. 1 yard=3 feet, so 1 square yard =3^2=9 square feet, so in the same duration of time, John can mow 14820/9=1647 square yards (approximately) per hour. 
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3 years ago
Can anyone help me please?
Tems11 [23]

The first one

Step-by-step explanation:

the other ones are not statistical

I hope this helps!

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3 years ago
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