Answer: Yoko=24, Rafael=57, Jim=19
<u>Step-by-step explanation:</u>
Yoko: x + 5
Rafael: 3x
Jim: x
Yoko + Rafael + Jim = Total text messages
x + 5 + 3x + x = 100
5x + 5 = 100
5x = 95
x = 19
************
Yoko: x + 5 = (19) + 5 = 24
Rafael: 3x = 3(19) = 57
Jim: x = 19
Step-by-step explanation: x= 2-y then plug that in for x so y= 2-y+2;
y=4-y; -4y=-y; y=-1/4
The 3rd equation, as if you solve for x as shown, you will end up with equation x=8.
Step-by-step explanation:
In the case of a discrete probability distribution of a random variable X, the mean is equal to the sum over every possible value weighted by the probability of that value; that is, it is computed by taking the product of each possible value x of X and its probability p(x), and then adding all these products together
