All categories

2 years ago

What is the polar form of 7 StartRoot 3 EndRoot minus 7 i?

Mathematics

1 answer:

ololo11 [35]2 years ago

3 0

Answer:

14(cos(330 degrees) + i sin(330 degrees))

option D

Step-by-step explanation:

edge 2020

You might be interested in

How many more people can sit on four 777 aircrafts than on four 767 aircrafts?

user100 [1]

Answer:40

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

1615/170 simplify show work

Sloan [31]

1615/170

We first need to convert this into a proper fraction. Which means that the denominator must be larger than the numerator for it to be proper. Also, since 1615 is BIGGER than 170, we will end up with a mixed fraction. A mixed fraction always has a whole number.

1615 can go into 170 how many times?

9 times

170*9 = 1530

Now subtract.

1615 - 1530 = 85

Now we have our mixed fraction: 9 85/170

Now we must simplify the fraction.

85/5 = 17
170/5 = 34

17/34 is the smallest possible fraction we can get.

9 17/34

Final answer: $9 \frac{17}{34}$

3 0

3 years ago

Read 2 more answers

The reading speed of sixth-grade students is approximately normal, with a mean speed of 125 words per minute and a standard devi

Lisa [10]

Answer:

Part A

μ of the reading speed of sixth-grade students = 125 words

σ of the reading speed of sixth-grade students = 24 words

Part B

The probability that a randomly selected sixth-grade student reads less than 100 words per minute is 14.92%

Part C

The probability that a randomly selected sixth-grade student reads more than 140 words per minute is 26.43%

Step-by-step explanation:

Part A:

μ of the reading speed of sixth-grade students = 125 words

σ of the reading speed of sixth-grade students = 24 words

Part B:

1. Let's find the z-score for a randomly selected sixth-grade student that reads less than 100 words per minute:

z-score = (100 - 125)/24

z-score = -25/24

z-score = -1.04

2. Now, let's find out the probability that a randomly selected sixth-grade student that reads less than 100 words per minute, using the z-table:

P (-1.04) = 0.1492

This means that the probability that a randomly selected sixth-grade student that reads less than 100 words per minute is 14.92%

Part C.

1. Let's find the z-score for a randomly selected sixth-grade student that reads more than 140 words per minute:

z-score = (140 - 125)/24

z-score = 15/24

z-score = 0.63

2. Now, let's find out the probability that a randomly selected sixth-grade student that reads more than 140 words per minute, using the z-table:

P (0.63) = 0.7357

But we're being asked for a randomly selected student that reads more than 140 words, then:

1 - P(0.63) = 1 - 0.7357 = 0.2643

This means that the probability that a randomly selected sixth-grade student that reads more than 140 words per minute is 26.43%

8 0

3 years ago

Jane and your Andrea pick apples Andrew pics three times as many pounds as Maria Jane pics two times as many pounds as Andrew th

koban [17]

Andrea picked 340 pounds

3 0

2 years ago

What is the volume of a sphere with a radius of 5 cm Use 3.14 for pie

bonufazy [111]

The volume of a sphere with a radius of 5cm is V≈523.6

4 0

2 years ago

Read 2 more answers