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mars1129 [50]
3 years ago
15

Question 6 (Essay Worth 2 points) Find all polar coordinates of point P = (2, 14°).

Mathematics
1 answer:
andrey2020 [161]3 years ago
4 0

Answer:

(2,14°+360n) and (-2,14°+(2n+1)180°)

Step-by-step explanation:

You start out with (2, 14°)

The polar coordinate can be written as (r, 0) = (r, 0+2nπ) or

(r,0)=(-r,0+2(n=1)π), where n is any integer.

The polar coordinates point : p=(r,0) = (2,14°)

For the positive value of r,  the polar coordinate can be written as

p=(2,14°) = (2,14°+360n°), where n is any integer.

For the negative value of r ,  the polar coordinate can be written as

p=(2,14°) = (-2,14°+(2n+1)180°), where n is any integer.

All the polar coordinates of point P are(2,14°+360n) and (-2,14°+(2n+1)180°).

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The manufacturer of an airport baggage scanning machine claims it can handle an average of 553 bags per hour. (a-1) At α = .05 i
timurjin [86]

Answer:

H1 : μ < 553. Reject H1 if tcalc > –1.753.

There is not enough evidence to reject the manufacturer’s claim.

Step-by-step explanation:

We are given that the manufacturer of an airport baggage scanning machine claims it can handle an average of 553 bags per hour.

A sample of 16 randomly chosen hours with a mean of 533 and a standard deviation of 47 is given.

Let \mu = <u><em>average bags that an airport baggage scanning machine can handle.</em></u>

SO, Null Hypothesis, H_0 : \mu \geq 553 bags     {means that the manufacturer’s claim is not overstated}

Alternate Hypothesis, H_0 : \mu < 553 bags     {means that the manufacturer’s claim is overstated}

The test statistics that would be used here <u>One-sample t-test statistics</u> as we don't know about population standard deviation;

                            T.S. =  \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample mean = 533 bags

            s = sample standard deviation = 47

            n = sample of hours = 16

So, <u><em>the test statistics</em></u>  =  \frac{533-553}{\frac{47}{\sqrt{16} } }  ~ t_1_5

                                     =  -1.702

The value of t test statistics is -1.702.

<u>Now, at 0.05 significance level the t table gives critical value of -1.753 at 15 degree of freedom for left-tailed test.</u>

Since our test statistic is more than the critical value of t as -1.702 > -1.753, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which <u><em>we fail to reject our null hypothesis</em></u>.

Therefore, we conclude that the manufacturer’s claim is not overstated and an airport baggage scanning machine can handle an average of 553 bags per hour.

5 0
3 years ago
Please please please please just answer quickly i have short time left
Nastasia [14]

9514 1404 393

Answer:

  (x, y) = (10, 4)

Step-by-step explanation:

Opposite sides are the same length, so ...

  ON = LM

  6x -3 = 4x +17

  2x = 20 . . . . . . . . add 3-4x

  x = 10

__

  OL = NM

  x -5 = 3y -7

  10 -5 + 7 = 3y . . . . . substitute x, add 7

  12/3 = y = 4 . . . . . .  simplify, divide by 3

The values of x and y are 10 and 4, respectively.

5 0
3 years ago
Need to double check my work to see if I’m correct lol is 5/12 bigger than 3/8?
N76 [4]

\frac{5}{12} = 0.41667

\frac{3}{8} = 0.375

You are correct! 0.41667>0.375

3 0
3 years ago
What is 10.66 • 19.64
Vanyuwa [196]

Answer: (10.66)(19.64) = 209.3624

3 0
4 years ago
20 points !! .Given Angles ∠C Number of equal
lisabon 2012 [21]

Answer:

70°

Step-by-step explanation:

Total angle in a triangle is 180

∠C = 180 - 70 - 40

= 180 - 120

= 70

5 0
3 years ago
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