Can someone please answer c. I’ve been trying for 30 mins and can’t understand it

7

Step-by-step explanation:

For c, we are given this sum from 1 to 3 of . 1/2 is a constant , therefore, we can move it outside of the summation.

*I hope you can understand what I'm saying. I can't figure out how to type in summations into the equations section.

1/2∑₁³n²

This means you would multiply the sum of n² from 1 to 3 by 1/2.

We are told n=1 to n=3 so we would plug 1, 2, 3 into n.

1²=1

2²=4

3²=9

We would add them together since that is what the sum sign tells us to do.

1+4+9=14

Now that we know the sum, we multiply it with 1/2

14/2=7

6/20

step-by-step explanation:

step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12