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Oxana [17]
4 years ago
14

The local amusement park was interested in the average wait time at their most popular roller coaster at the peak park time (2 p

.m.). they selected 13 patrons and had them get in line between 2 and 3 p.m. each was given a stop watch to record the time they spent in line. the times recorded were as follows (in minutes) (mean = 114.15): 118, 124, 108, 116, 99, 120, 148, 118, 119, 121, 45, 130, 118 what is the variance?
Mathematics
1 answer:
Ahat [919]4 years ago
8 0
With the use of the statistics function on a calculator the value of 23.62 was found for s, the sample standard deviation. The sample variance is:
s^{2}=23.62^{2}=558
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Write an equation that represents a line that is parallel to y=3/4x and passes through the point (2,1).
Kisachek [45]
Insert the slope and point into point-slope form:-

y - 1 = 3/4(x - 2)
y = 3/4x - 6/4 + 1
y = 3/4x -  1/2
6 0
4 years ago
What's the slope of the line
Nesterboy [21]

Answer:

2/5

Step-by-step explanation:

Look at where the lines lay on coordinate plane correctly.

3 0
3 years ago
First four terms of f(n)=3n-1
gavmur [86]
First four terms would be n = 1, 2, 3, 4

f(1) = 3 ( 1 )( 1 + 3 )
= 3 * 4
=12
f(2) = 3 ( 2 )( 2 + 3 )
= 6 * 5
= 30
f(3) = 3 ( 3 )( 3 + 3 )
= 9 * 6
= 54
f(4) = 3 ( 4 )( 4 + 3 )
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8 0
4 years ago
Read 2 more answers
Given that <img src="https://tex.z-dn.net/?f=z%3Dx%2Biy" id="TexFormula1" title="z=x+iy" alt="z=x+iy" align="absmiddle" class="l
Mnenie [13.5K]

Answer:

z= 5-2i

Step-by-step explanation:

Start replacing!

(x+iy) + 4i (x-iy) = -3+18i \\ x+iy +4ix -4i^2 y = -3 + 18i \\\\x + i (4x+y) +4y = -3 + 18i\\x+4y + (4x+y) i = -3 + 18i

Now two complex numbers are equal if both the real and imaginary parts are equal, which gives you the system of equation \left \{x+4y=-3} \atop {4x+y=18} \right.

Pick any method to solve it and you'll get x=5, y= -2

6 0
3 years ago
What is 3x/2+7=13 i don't know how to salve this problun
Julli [10]

your answer is 39.

First you would add 7 and 2 to get 9. From there you would get the equation 3x/9=13.

Then you would multiple by the reciprocal, or 9/1 to cancel out 3x/9.

Then u multiply 9×13 because what u do to one side you have to do to the other.

Your equation should now say 3x=117.

Finally divide by 3 to solve for x.

X=39.

7 0
4 years ago
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