Add 3 on both sides
8y - 3 + 3 = 13 + 3
8y = 13 + 3
8y = 16
Divide 8 on both sides
8y/8 = 16/8
y = 16/8
y = 2
y = 2
Answer:
e
Step-by-step explanation:
50 and 40
Every 24 days Matt will do both on the same day.
2/5x+y=3
-2/5x -2/5x
y=-2/5x+3
Does y = to whole number or just like that? if it Whole number I will solve it tell me
Answer:
3.6661
3.6661
A, Adding a constant does nothing to the standard deviation
Step-by-step explanation:
I'm gonna assume s=standard deviation
The standard deviation is just the square root of the second moment minus the first moment squared
Because we were not told otherwise I think it's pretty safe to assume that all events are equally likely
Let's start by calculating the first moment (AKA The mean)
1/5(8+16+14+8+16)= 12.4
Let's then find the second moment
1/5(8²+16²+14²+8²+16²)= 167.2
√(167.2-12.4²)=3.6661
b.
While I could just tell you that adding something to the standard deviation (and the variane as well) doesn't do anything let's calculate it for fun
same process
.2(16+24+22+16+24)= 20.4
.2(16²+24²+22²+16²+24²)=429.6
√(429.6-20.4²)= 3.6661