Question

I'm doing this math test and I have a border line A on my grade I need to make sure I don't lower my grade to a B, so any help is appreciated. Thanks!

7. The probability of winning a game is 25%. How many times should you expect to win if you play 20 times?
A. 7 times
B. 10 times
C. 2 times
D. 5 times
I have no idea how to solve this one ^^

10. The spinner is divided into equal parts. Use a tree diagram to find the probability that the spinner will land on a consonant both times if the spinner is spun twice.
The Spinner is divided into 3 parts which have the following letters on them
(N, E, U)
A. 1/9 ***
B. 1/3
C. 5/9
D. 3/4

13. Which events are not independent?
A. You draw two colored marbles without replacement and get one red and one blue. ***
B. You pull a green tile from a bag of tiles, return it, and then pull a yellow tile.
C. You toss two coins and get one head, one tail.
D. You choose two different ice cream flavors for a cone.

14. If two coins are tossed, what is the probability that the first coin will show heads and the second coin will show tails?
A. 1/2 ***
B. 1/4
C. 1/8
D. 1/16

My answer ***

Answer 1

7. D

Answer 2

Yes, you should win about 1/4 of the games :)
14 has 4 possibles
h h
h t
t h
t t
only one of those works

Answer 3

Thanks! And aside 7 and 14 are the rest correct ?

Answer 4

yes

Answer 5

Again Thank You so much you guys are life savers !!

Answer 6

I got a 93% on my test !! Thanks for the help again

Answer 7

Kids these days