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Komok [63]
3 years ago
11

What is the equation of the line that best fits the given data? A graph has points (1, 7), (1, 6), (2, 5), (2.5, 5), (3, 3), (4,

1). a. y = negative 5 x + 11 c. y = 3 x + 10 b. y = negative one-third x + 10 d. y = negative 2 x + 9 Please select the best answer from the choices provided A B C D
Mathematics
1 answer:
Mice21 [21]3 years ago
6 0

answer is d

Step-by-step explanation:

hope it is helpful

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A large on-demand video streaming company is designing a large-scale survey to determine the mean amount of time corporate execu
Diano4ka-milaya [45]

Answer:

n=(\frac{2.262(3)}{0.25})^2 =736.79 \approx 737

So the answer for this case would be n=737 rounded up to the nearest integer

Step-by-step explanation:

We have the following info given:

\bar X = 12 the sample mean

s = 3 the sample deviation

n = 10 represent the sample size

The degrees of freedom are given by:

df =n-1 =10-1=9

The margin of error is given by this formula:

ME=t_{\alpha/2}\frac{s}{\sqrt{n}}    (a)

And on this case we have that ME =0.25 and we are interested in order to find the value of n, if we solve n from equation (a) we got:

n=(\frac{t_{\alpha/2} s}{ME})^2   (5)

The confidence level is 95% and the critical value for this case would be given by t_{\alpha/2}=2.262, replacing into formula (5) we got:

n=(\frac{2.262(3)}{0.25})^2 =736.79 \approx 737

So the answer for this case would be n=737 rounded up to the nearest integer

7 0
3 years ago
The ratio of carbon-14 to carbon-12 in a piece of wood discovered in a cave is R = 1/917. Estimate the age of the piece of wood
Colt1911 [192]

Answer:

The answer is "\bold{6.6 \times 10^{12}\ years}"

Step-by-step explanation:

Let the given value is:

R=\frac{1}{9^{17}}\\\\\to \frac{N_{c_{14}}}{N_{c_{12}}}=\frac{1}{9^{17}}\\\\\to t=\frac{2.303 \times 9^{17}}{5717}=6.6\times 10^{12}\ years

7 0
2 years ago
What would the altimeter read if Janelle were at sea level? What do the positive readings on the altimeter represent? What do th
EleoNora [17]

Step-by-step explanation:

a square has the same perimeter as a 5cm by 7cm rectangle. which of the following area of the square

4 0
1 year ago
The altitude a ( in feet) of a plane t minutes after lift off is given by a=3400t+600
Julli [10]

Answer:

  6 minutes

Step-by-step explanation:

'a' in the formula represents altitude in feet. You are told the altitude is 21000 feet, so put that into the formula:

   21000 = 3400t +600

You can solve this for t:

  20400 = 3400t . . . . . subtract 600 from both sides

  6 = t . . . . . . . . . . . . . . . divide both sides by 3400

The problem statement tells you that t represents minutes after lift off, so this solution means the altitude is 21000 feet 6 minutes after lift off.

The question is asking for the number of minutes after lift off that the plane reaches an altitude of 21000 feet, so this answers the question directly:

  The plane is at an altitude of 21000 feet 6 minutes after lift off.

4 0
2 years ago
PLS HELP ME WITH GEOMETRY PLS :)
MArishka [77]

Answer:

-4, -24

Step-by-step explanation:

The location of Z is either +10 or -10 units away from Y, since YZ = 10. Then Z could be located at either -4 or -24.

3 0
3 years ago
Read 2 more answers
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