What does ø mean ? Can someone explain it based off the problem in the photo ?

Answers

Answer 1

Answer:

Answer:

It means something mathematical

Step-by-step explanation:

The slashed zero glyph is often used to distinguish the digit "zero" ("0") from the Latin script letter "O" anywhere that the distinction needs emphasis, particularly in encoding systems, scientific and engineering applications, computer programming (such as software development), and telecommunications.

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What is the greatest common factor of 60x4y7, 45x5y5, and 75x3y?

Answers

factor and group common ones
60=2*2*3*5*x*x*x*x*y*y*y*y*y*y*y
45x^5^5=3*3*5*x*x*x*x*x*y*y*y*y*y
75x^3y=3*5*5*x*x*x*y

the commmon gropu to all is 3*5*x*x*x*y=15x^3y

Which of the following is the function representing the graph below?

Answers

You need to pick a point on the graph, then go through the list of choices
and see which one can produce the point you picked.

Look at the point on the graph right above the origin, where the graph
crosses the y-axis. At that point, x=0 and f(x) (or 'y') = 1 .

Now look at the choices, one at a time, and see whether (0, 1) fits.
I'll start at the bottom of the list:

--> f(x) = 4^(x-3)
When x=0, f(x) = 4^(-3) .
4^(-3) is not '1', so our point is not on this f(x).

--> f(x) = 4^x + 3
When x=0, f(x) = 4⁰ + 3 = 1 + 3 = 4
'4' is not '1', so our point is not on this f(x).

--> f(x) = 4^x - 3
When x=0, f(x) = 4⁰ - 3 = 1 - 3 = -2
'-2' is not '1', so our point is not on this f(x).

(Only one choice left.)

--> f(x) = 4^x
When x=0, 4^x = 4⁰ = 1
That's it ! Our point is on this f(x).
Which is lucky, because we were out of choices.

In a sample of 50 households, the mean number of hours spent on social networking sites during the month of January was 45 hours. In a much larger study, the standard deviation was determined to be 8 hours. Assume the population standard deviation is the same. Which of the statement below best describes that there is a 95% confidence interval for the mean hours devoted to social networking in January? A. The 95% confidence interval ranges from 8 to 45 hours. B. The 95% confidence interval ranges from 40.13 to 45.78 hours. C. The 95% confidence interval ranges from 43.87 to 46.13 hours. D. The 95% confidence interval ranges from 42.78 to 47.22 hours.

Answers

Answer:

D. The 95% confidence interval ranges from 42.78 to 47.22 hours.

Step-by-step explanation:

Here,

n = sample size = 50,

μ = mean = 45,

σ = standard deviation = 8,

We know that, confidence interval will be,

$=\mu\ \pm\ z(\sigma )/(√(n))$

For a confidence interval of 95%, we use z = 1.96, putting the values

$=45\ \pm\ 1.96(8)/(√(50))$

$=42.78,47.22$

D. The 95% confidence interval ranges from 42.78 to 47.22 hours.

To solve the interval, we used the upper and lower limit formulas wherein:
xbar = 45
z = 1.96
s = 8
n = 50

HELP ASAP I NEED THIS DONE.

Answers

26 - add all the sides

At camp last summer the ratio of boys to girls was 3:5 if there was a total of 160 campers how many girls were there

Answers

I believe there is 100 girls or something close to that.

Using the simple random sample of weights of women from a data set, we obtain these sample statistics: nequals45 and x overbarequals149.27 lb. research from other sources suggests that the population of weights of women has a standard deviation given by sigmaequals30.72 lb.a. find the best point estimate of the mean weight of all women.
b. find a 99% confidence interval estimate of the mean weight of all women

Answers

Answer is a. Find the best point estimate of the mean weight of all women

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