The Triple L investment club is considering purchasing a certain stock. After considerable research, the club members determine that there is a 70% chsnce of making $12,000, 10% chance of breaking even, and a 20% chance of lising $7400. Finf the expectation if this purchase.
The expected value is $

Since there is a 70% chance of making $12,000 so have that:

.70 × 12000 = 8400

Also, we have a 10% chance of breaking even, so we also have that:

.10 × 0 = 0

Finally, we have a 20% chance of losing $7400 so we also have that:

.20 × 7400 = 1480

Thus, putting it all together we have:

.70(12000) + .10(0) + .20(7400) = 8400 + 0 + 1480 = 9880

Therefore, the expected value is:

$9880

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.