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3 years ago

5

It costs $20 per hour to play pool and $3 for a cue stick rental.Write a verbal model and algebraic expressions to represent the

cost for n hours of playing pool and identify the units for the expression

1 answer:

Fed [463]3 years ago

8 0

Verbal: $23 for every hour you play

Algebraic: 23 x n = total cost

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PLEASE HELP ILL GIVE 5* AND THANKS.

harkovskaia [24]

Ok so a) is integers
And b) is 21

Explaining for B
From 1-3 he added 2
From 3-6 he added 3
From 6-10 he added 4
From 10-15 he added 5
So we r gonna continue the sequence by adding 6
15-21 we added 6

5 0

3 years ago

Read 2 more answers

Which expressions are solutions to the equation 3/4 x = 15?

algol [13]

I think so C is correct
Because is true.

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3 years ago

A simple random sample of size n is drawn from a normally distributed population, and the mean of the sample is (x with a line o

prohojiy [21]

Answer:

Last option

${\overline {x}}} \± \frac{2.58*s}{\sqrt{n}$

Step-by-step explanation:

${\overline {x}}$

If we extract a sample of size n from a normal population and we want to estimate the population mean then the confidence interval for the mean will be:

${\overline {x}}} \± Z_{\alpha/ 2}*\frac{s}{\sqrt{n}$

Where

Where ${\overline {x}}$ is an estimator for the mean μ.

n is the sample size and s is its standard deviation.

$\alpha$ is the level of significance

$\alpha$ = 1-Confidence Level

$\alpha= 1-0.99$

$\alpha = 0.01$

Then $Z_{\frac{\alpha}{2}} = Z_{\frac{0.01}{2}} = Z_{0.005}=2.58$

Then the 99% confidence interval for the population mean is

${\overline {x}}} \± \frac{2.58*s}{\sqrt{n}$

3 0

4 years ago

Read 2 more answers

Add (4a2b-3ab2 + 2ab + 5) + (2ao + 3ab2 - 7ab).

AleksAgata [21]

Answer:

a2bnd • (4a2b - 3ab2 + 2ab + 5) • (2a + 3b - 7)

Step-by-step explanation:

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4 years ago

The length of the stadium is 100 yards and it’s with 75 yards if 1 inch represents 25 yards what would be the Destiination of th

Alex73 [517]

Answer:

Three by four inches.

Step-by-step explanation:

Width: 25+25+25=75=3

Length: 25+25+25+25=100=4

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3 years ago