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3 years ago

Daniel bought 3 comic books at the bookstore. He spent $8.33 on the first book and $7.33 on the

Mathematics

2 answers:

Gnesinka [82]3 years ago

5 0

Answer:

the 3rd book is 9.03

Step-by-step explanation:

all you have to do is add 8.33 + 7.33 and thate 15.66 so 24.69 - 15.66 is 9.03

elixir [45]3 years ago

3 0

Answer:

The third book cost $9.03

Step-by-step explanation:

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Solve the proportion:<br> -9/6 = 3/x

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1) The variable x represents a value in the set ( 4, 6, 7, 8). Which value of x makes 2 (x-4) +3 =7?

sammy [17]

Answer:

x=6

Step-by-step explanation:

2 (x-4) +3 =7

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3 years ago

6. The mean number of hours of flying time for pilots at Continental Airlines is 37 hours per month (The Wall Street Journal, Fe

SashulF [63]

Answer:

The marginal error is 2.355

Confidence interval is $(34.645,\ 39.355)$

The LB and UB are 34.645 and 39.3555 respectively.

Step-by-step explanation:

Consider the provided information.

n = 49, s = 8.2 c = 95%and $\bar x=37$

Degree of freedom is: n-1 = 49-1 = 48.

$\alpha =\frac{1-c}{2}= \frac{1-0.95}{2}\\\alpha = \frac{0.05}{2}= 0.025$

From the table $t_{\alpha /2}=2.010635$

Marginal error is:

$E=t_{\alpha /2}\times \frac{s}{\sqrt{n}}$

$E=2.0106\times \frac{8.2}{\sqrt{49}}$

$E=2.0106\times \frac{8.2}{7}$

$E=2.0106\times 1.171$

$E=2.355$

Hence, the marginal error is 2.355.

Part (B)

95% confidence interval estimate

$(\bar x-E,\ \bar x+E)$

$(37-2.355,\ 37+2.355)$

$(34.645,\ 39.355)$

Thus, the LB and UB are 34.645 and 39.3555 respectively.

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3 years ago

Given ABCD, what is the measure of

Gennadij [26K]

Answer:

srry dude this isn't rly a quesiton

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3 years ago