Answer:
$30
Step-by-step explanation:
The price of each chemistry class is $30.
Answer:

Step-by-step explanation:
Answer: D, .1
Step-by-step explanation: 10 marbles and 1 green
50 times she pulled and almost every ten tries she got green meaning there's a high chance of her getting 1 green every 10 tries
Answer:
It is either 11/12 or 0.91666666667.....
Step-by-step explanation:
Because this can not be actually divided into a "number" like 2 or 5, we can only get a approximate. Like the top answer.
Round to the nearest ten is 0.9
Round it to nearest hundredths is 0.92
Answer:
You are correct
It is C divided by PI
Step-by-step explanation:
c=pi x D
Using substitution method replace letters with numbers
12(c)=3(pi) x 4(d)
we want 4(d) the subject of the formula
4(d)=
12/3 =4
so it is 4(d)=12(c)/3(pi)
so D=C/PI