Answer:
Step-by-step explanation:
When the first draw is done there are 9 red balls in a sample size of 21. So there probability of drawing a red ball will be 
When the second draw is done, there will be 12 yellow balls in a sample size of 20 since the first ball will not have been replaced into the bag. So the chance of someone drawing the second ball in the second draw is 
The probability of them happening in this order is the product of both probabilities:
Answer:
b
Step-by-step explanation:
because it is the correct one
Answer:
0.45
Step-by-step explanation:
you have to divide 5.40 by 12
Use H. 30 but just to let you know the x axis is along the bottom and the y is up and down. in order to pick a scale you need to fit all of the data points into the graph
It would be
3.5 × 10⁻³ kg.
The decimal point must be moved 3 places to the right in order to have it behind the first non-zero digit; this gives us the exponent of 3, and since we are moving the decimal to the right, it is a negative exponent.
