The levels of mercury in two different bodies of water are rising

Step-by-step explanation:

For you, Best friend,

If I don't get this back, I'm obviously not a close friend.

Now, I have a game for you. It has been played since 1977. Well, that's what I have heard. Once you get this, you have to send it to ten people. If you do, your next five days will be like this:

Day 1: Your crush will hang out with you. ❤️

Day 2: You will find $20 on the ground.

Day 3: You will ace all your tests. ⭐

Day 4: You will get the thing you have always wanted.

Day 5: You will earn 7 new friends.

(Bummer if it is the summer, because then Day 3 won't matter. )

Remember, 10 people. In 12 hours. If you don't send this to 10 people in 12 hours, your 5 days will be the opposite:

Day 1: Your crush will hate you.

Day 2: You will lose $20. ☹️

Day 3: You will fail your tests.

Day 4: You will never get the thing you've always wanted.

Day 5: You will lose 7 friends. ‍♀️‍♂️‍♀️‍♂️‍♀️‍♂️‍♀️

Choose these 10 people wisely. I wish you best luck.

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify

question 1 is 8, question 2 is 9, question 3 is 24

step-by-step explanation:

now, the numbers they give you at the top are the key. from there, you just have to plug and chug! let's try 1, 2, and 3!

key: a=3, b=5, c=6

1. a+5

remember, a=3, so we plug that in to get 3+5=8

2. 15-c

c=6, so we plug that in to get 15-6=9

3. 4b

b=6, so we plug it in to get 4*6=24

time to try the rest on your own! if you put the answers below in a comment, i'll check them for you!