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3 years ago

PLEASE HELP PLEASE AS FAST AS POSSIBLE PLEASE HELP PLEASE

Mathematics

1 answer:

Pie3 years ago

7 0

The answer is C) $1104.49

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At a carnival, Ryan bought 16 packs of 7 tickets each. He also found 9 more tickets on the ground. How many tickets did Ryan hav

V125BC [204]

Answer:

121 tickets

Step-by-step explanation:

16x7+9=121

I hope this helps

3 0

3 years ago

A rectangle has a width of 5 inches and a length of 9 inches. What will be the new dimensions of the rectangle after it is

kondor19780726 [428]

Answer:

the third one

Step-by-step explanation:

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8 0

3 years ago

Read 2 more answers

8 ft<br> Find the area of the figure.

lina2011 [118]

Answer:

Area of a rectangle is length multiplied by the width. In this case, length is equal to width. So, Area is 8 ft * 8 ft which is 64 ft2.

5 0

3 years ago

Construct a 95% confidence interval for the population mean, μ. Assume the population has a normal distribution. A random sample

GuDViN [60]

Answer: $(628.48,\ 661.52)$

Step-by-step explanation:

Given : Sample size : $n=16$ , which is a small sample (, 30) so we use t-test.

Sample mean : $\overline{x}=645 \text{ hours}$

Standard deviation : $\sigma = 31 \text{ hours}$

Significance level : $\alpha=1-0.95=0.05$

Critical value : $t_{n-1,\alpha/2}=2.131$

The confidence interval for population mean is given by :-

$\overline{x}\pm t_{n-1,\alpha/2}\dfrac{\sigma}{\sqrt{n}}\\\\=645\pm(2.131)\dfrac{31}{\sqrt{16}}\\\\\approx645\pm16.52\\\\=(645-16.52,\ 645+16.52)\\\\=(628.48,\ 661.52)$

Hence, a 95% confidence interval for the population mean $\mu$ = $(628.48,\ 661.52)$

6 0

3 years ago

Geoff has a bag that contains 4 red marbles and 6 blue marbles. He chooses two marbles at random and does not replace them. What

posledela

Total number of marbles = 10

Number of red marbles = 4

Number of blue marbles = 6

Probability = $\frac{number of favorable outcomes}{total number of outcomes}$

The probability that the first marble is blue = $\frac{6}{10}$

The probability that the first marble is red = $\frac{4}{9}$ ; 9 because 1 marble has already been taken out.

Joint probability= probability of event A * Probability of event B

= $\frac{6}{10}\times\frac{4}{9}$ = $\frac{24}{90}= \frac{4}{15}$

3 0

3 years ago