Answer:
.80x
Step-by-step explanation:
If the price is reduced by 20% we are paying 100-20 or 80 percent
The new price is
x* 80%
.80x
Answer: The correct number of balls is (b) 4.
Step-by-step explanation: Given that a single winner is to be chosen in a random draw designed for 210 participants. Also, there is an equal probability of winning for each participant.
We are using 10 balls, numbered through 0 to 9. We are to find the number of balls which needs to be picked up, regardless of order, so that each of the 210 participants can be assigned a unique set of numbers.
Let 'r' represents the number of balls to be picked up.
Since we are choosing from 10 balls, so we must have
The value of 'r' can be any one of 0, 1, 2, . . , 10.
Now,
if r = 1, then
If r = 2, then
If r = 3, then
If r = 4, then
Therefore, we need to pick 4 balls so that each participant can be assigned a unique set of numbers.
Thus, (b) is the correct option.
Answer:
A. (3, 3)
X and Y both equal 3
Step-by-step explanation:
Answer:
you have to do length times width times height then divide by 2 :)
Step-by-step explanation:
The place value of 7 in 0.724 is the tenth place.