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Nimfa-mama [501]
4 years ago
8

Guys help me, please it's due very soon

Mathematics
1 answer:
ivanzaharov [21]4 years ago
5 0
Riddle 1 is 436.
Riddle 2 is 79
You might be interested in
A. y ≤ 3x +2
Lapatulllka [165]
C) I think you know the increasing line is the one with 3*x and the other one is -2*x, then the dotted line requires <, instead of <=, the rest I'm sure you can figure out.

Let me know if you need more explanation, but it's to make sure next time you answer someone, instead of asking! :)
8 0
3 years ago
A survey of 1000 air travelers1 found that 60 % prefer a window seat. The sample size is large enough to use the normal distribu
stira [4]

Answer:

The 90% confidence interval is 0.575 to 0.625.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence interval 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

Z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

n = 1000, \pi = 0.60

90% confidence interval

So \alpha = 0.1, z is the value of Z that has a pvalue of 1 - \frac{0.1}{2} = 0.95, so z = 1.645.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.60 - 1.645\sqrt{\frac{0.60*0.40}{1000}} = 0.575

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.60 + 1.645\sqrt{\frac{0.60*0.40}{1000}} {119}} = 0.625

The 90% confidence interval is 0.575 to 0.625.

3 0
3 years ago
Okay so i dont understand so please help me if you do
larisa [96]

Answer:

C. (-x, y)

Step-by-step explanation:

If you look at the graph the rectangle with the D', E', F', and G'. This is the one we are looking at.

It was rotated on the y-axis. and it stayed in the positive y.

It went to the negative x though.

C. (-x, y) is your answer.

5 0
4 years ago
The world's fastest man, Usain Bolt,
fomenos

Answer:

41.76 meters

Step-by-step explanation:

Usain Bolt's speed = \frac{62.64}{6}= 10.44m/s

=> In 4 seconds Usain Bold can run: 10.44 x 4 = 41.76m

3 0
3 years ago
In the figure below, angle y and angle x form vertical angles. Angle x forms a straight line with the 50° angle and the 40° angl
11Alexandr11 [23.1K]
Hint: angle y is adjacent to an angle of 90 degrees adjacent angles add up to 180 degrees

6 0
3 years ago
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