The option D is the correct option.
According to the statement
we have to define the sample variance in the words.
So,
The sample variance is the sum of the squared deviations from the mean divided by the number of measurements minus one.
and in the case of the population variance it becomes
The population variance is the average of the squared distances of the measurements on all units in the population from the mean.
This is the method by which we define the sample variance and population variance.
So, The option D is the correct option.
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Answer:
(x + 1)² + (y + 3)² = 16
Step-by-step explanation:
The equation of a circle in standard form is
(x - h)² + (y - k)² = r²
where (h, k) are the coordinates of the centre and r is the radius
Given
x² + y² + 2x + 6y - 6 = 0
Collect the x and y terms together and add 6 to both sides
x² + 2x + y² + 6y = 6
To complete the square
add ( half the coefficient of the x/ y terms )² to both sides
x² + 2(1)x + 1 + y² + 2(3)y + 9 = 6 + 1 + 9
(x + 1)² + (y + 3)² = 16
with centre = (- 1, - 3) and r = 
= 4
Since the car costs $117 a day and you are going on a three day road trip, then you would do 117 x 3 = 351.
Subtract 351 from the total cost 373 - 351 = 22
To find out how many additional miles you drove, 22/0.22 = 100
So you drove 100 additional miles.
Answer:
Step-by-step explanation:
- A. 134 is the mode, correct, repeated 5 times
- B. 111 is appears 3 times, incorrect , this number is not part of data set
- C. There are more data values between 130 and 139, correct, there are 8 of them
- D. There are 20 data values, incorrect , there are 23
Answer:
x=111
Step-by-step explanation:
the sum of angles of triangle is 180
find te missing angle in the triangle first :
180-29-82=69
find x now: the measure of straight angle is 180:
x+69=180
x=180-69=111
this one way to find x
another way is that x=82+29=111
