Answer:
G. 0.45
Step-by-step explanation:
To find expected value, you simply multiply the value of each outcome (the numbers in the left column) by its probability
(the numbers in the right column) and then add them all together.
0(0.7) + 1(0.2) + 2(0.05) + 3(0.05)
0 + 0.2 + 0.1 + 0.15 = 0.3 + 0.15 = 0.45
Your multiplying by -4 each time
-1x-4=4
4x-4=-16
-16x-4=64
Answer:
9
Step-by-step explanation:
60 requests are made.
Spencer gets 25% of these requests. Convert this to a decmal (divide by 100) to get 0.25. 25% of 60 is:

So Spencer gets 15 requests. Now do the same process for Tanvi:

So Tanvi gets 6 requests. To find out how many more requests Spencer gets compared to Tanvi:

Therefore, Spencer gets 9 more requests than Tanvi.
For this case we have the following expression:

The first thing we must do is to rewrite the expression as the product of two binomials.
To do this, we add similar terms.
We have then:

Then, doing distributive property we have:

Adding similar terms:
Answer:
The simplified expression is: