Answer:
11 lessons +2/5th of a lesson
Step-by-step explanation:
360-85= 285
285/25 = 11.4
Answer is 11 lessons and 2/5th of a lesson
Let
S = sum of the data values
n = number of data values
The mean M is equal to
M = S/n
since you add up the values and divide by n. We don't need to know what S or n are.
If we add 5 to each data value, then we're adding on n copies of 5, or 5n
The new mean N is
N = (S+5n)/(n)
N = (S/n) + (5n/n)
N = M + 5
The new mean is a result of taking the old mean M and adding on 5
So,
N = M+5
N = 10+5
N = 15
The standard deviation will remain the same because each data value hasn't moved in relation to one another. Every data value has been shifted up the same amount. For instance if A and B are two points in this data set, then A+5 and B+5 will be the same distance away. Apply this logic to any number of data values. While standard deviation isn't that simple, it still has a loose connection to "distance" of the values, or how spread out they are.
So that's why the final answer is choice C)
Answer:
80 cubic in
Step-by-step explanation:
The volume of the rectangular prism is 2*2*14= 56 cubic in
The volume of the triangular prism is 2*2*3=12 cubic in
Since there are one on each side, you have to add another 12 cubic in
so that would be 56+ (12+12) = 80 cubic in
the absolute value is positive 75.
