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WITCHER [35]
3 years ago
15

Find all polar coordinates of point P = (9, 75°).

Mathematics
1 answer:
zubka84 [21]3 years ago
6 0

Answer:

1) (9, 75+360n)

2) (−9, 255+360n)

Step-by-step explanation:

(9, 75) is same as (9, 75 + 360)

so it would be (9, 435)

It can also be expressed as (-9, 75 + 180 degrees)

so (-9,255) degrees

In general, (9,75+360 n) for n≥0 represents half of the possible ways of representing the point : (9,75)  

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ipn [44]

Answer:

Step-by-step explanation:

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Question 2. 3 3/5 + 3 3/5 = 6 6/5 which equals 7 1/5 if you add another one.

so the answer for question 2 is " 1.521.

7 0
3 years ago
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Write down in terms of n, an expression for the nth term
Nimfa-mama [501]

Answer:

a_{n} = - 7n - 1

Step-by-step explanation:

There is a common difference between consecutive terms , that is

- 15 - (- 8) = - 22 - (- 15) = - 29 - (- 22) = - 36 - (- 29) = - 7

This indicates the sequence is arithmetic with nth term

a_{n} = a₁ + (n - 1)d

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7 0
2 years ago
2. A set of data consists of the number of years that applicants for foreign service
Bad White [126]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the regression equation :

y = 31.6 + 10.9x

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y = the grade on the test.

The predicted is y which is also the same as the response variable, hence, the response variable is grade on the test

The predictor variable is x, which is the independent variable, which is the number of years of study.

From. The regression output given ;

The slope which is the Coefficient of the predictor variable is 10.9 which means that for every unit change in number of years of study, the grade on test increases by 10.9

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2 years ago
Question 1 a
Marizza181 [45]

Answer:

B) A one-sample t-test for population mean would be used.

Step-by-step explanation:

The complete question is shown in the image below.

The marketing executive is interested in comparing the mean number of sales of this year to that of previous year.

The marketing executive already has the value of mean from previous year and uses a sample to calculate the mean and standard deviation of sales for the current year.

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Therefore, we can conclude that A one-sample t-test for population mean would be used.

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2 years ago
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Gwar [14]

Answer:

Im not entirely sure but i think that either a or d is correct

Step-by-step explanation:

hope this helps!

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2 years ago
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