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3 years ago

I NEED HELP ON NUMBER 3 PLEASE

Mathematics

1 answer:

ladessa [460]3 years ago

7 0

21, A 13, B You're welcome!

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Find all polar coordinates of point P where P = ordered pair 1 comma pi divided by 3.

baherus [9]

Answer:

(1, π/3 +2kπ), (-1, 4π/3 +2kπ) . . . where k is any integer

Step-by-step explanation:

Adding any multiple of 2π to the angle results in the same point in polar coordinates.

Adding 180° (π radians) to the point effectively negates the magnitude. As above, adding any multiple of 2π to this representation is also the same point in polar coordinates.

There are an infinite number of ways the coordinates can be written.

6 0

3 years ago

Read 2 more answers

What is 14^2 ????????????????????

nata0808 [166]

14^2 is the same as saying 14x14
=196

3 0

3 years ago

Read 2 more answers

2.At a local bank 7 out of 12 12 employees have a master's degree. If the bank has 100 employees,

Komok [63]

The correct answer is 58

4 0

3 years ago

Sample size: A researcher is trying to decide how many people to survey. Which of the following sample sizes will result in a co

oksian1 [2.3K]

Answer:

Step-by-step explanation:

Given that a researcher is trying to decide how many people to survey.

We have confidence intervals are intervals with middle value as the mean and on either side margin of error.

Confidence interval = Mean ± Margin of error

Thus confidence interval width depends on margin of error.

Margin of error = $Critical value *\frac{\sigma}{\sqrt{n} }$

Thus for the same confidence level and std deviation we find margin of error is inversely proportional to square root of sample size.

Hence for small n we get wide intervals.

So if sample size = 300, the researcher will get wider confidence interval

4 0

3 years ago

Find the value of y- ( 8y +2) and (3y +5)= 73

kiruha [24]

Y=6 because if you break it down you get (11y+7) =73 then you subtract 7 from both sides to get 11y=66 then you divide 11 on both sides to get y=6

7 0

2 years ago