Afair spinner is numbered 1 to 8. it is spun 768
times. how many times would you expect to get a
square number?

NOT BE EXACTLY 192 times but it would be NEAR 192 times.

Step-by-step explanation:

A square number is a number that multiplied by itself like 4 because 4 = 2*2

The total square numbers from 1 to 8 would be: 1 and 4 (2 total)

So the probability of roling either 1 or 4 in 1 time would be:

probability of rolling 1 or 4/ total outcomes probability

= 2/8 = 1/4 or 25%

So if it is spun 768 times, the total times that would show either 1 or 4 would be:

1/4 * 768 = 192 times.

So the possible of total times getting an 1 or 4 may NOT BE EXACTLY 192 times but it would be NEAR 192 times.

Hope this help you :3

i assume that by 5 you mean 5 gallons.

(20)(0.25) = 15

removing 15 gallons reduces the tank from 20 to 5.

sorry, i don't know i just need points, i'm new here. chao