If each score in a set of data scores were increased by 8 points, how would this affect the mean and the standard deviation?

A)The mean would increase by 8, and the standard deviation would increase by 8. B)The mean would increase by 8, but the standard deviation would increase by 64. C)The mean would increase by 8, and the standard deviation would remain the same. D)The mean would remain the same, and the standard deviation would increase by 8.
It's on usatestprep please help

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

50- 250 is correct i did that one too

step-by-step explanation:

0.6

39mph

step-by-step explanation:

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.