The variance of a constant is zero. Rule 2. Adding a constant value, c, to a random variable does not change the variance, because the expectation (mean) increases by the same amount. ... Multiplying a random variable by a constant increases the variance by the square of the constant.
4/1 or 4. I hope this helps!
Answer:
I think its XY=15.
Step-by-step explanation:
Answer:
1st is 30 and 16. 2nd is reduction. 3rd is scale factor of 2/3
Step-by-step explanation:
#1 you dilate by a scale factor of 2 so you just multiply all the sides by 2 to get your answer. 15x2=30 and 8x2= 16.
#2 it is a reduction because m', s', and v' are smaller then m, s, and v
#3 the scale factor is 2/3 because you do the image over the pre-image so -2,2 / -3,3 is 2/3 same is 4,2 / 6,3 and 2,-2 / 3, -3
