Step-by-step explanation:
Replacement means the probability of each trial is the same (the trials are independent).
For example, let's say you have a standard deck of 52 cards, and you want to find the probability of drawing a queen card twice.
There are 4 queens, so the probability on the first draw is 4/52.
You then replace the queen, so there are still 4 queens in the deck. So the probability on the second draw is still 4/52.
The total probability is the product: 4/52 × 4/52 = 1/169
If you didn't replace the queen after the first draw, there would have been 3 queens in the deck, and the probability on the second draw would have been 3/52.
My guess is 30 because every triangle has to add up to 180. 90+60 is 150 180-150 is 30
Answer:
105
Step-by-step explanation:
Substitute X for 7: 3(7)(7-2)
Simplify: 21(5)
Multiply: 105
Answer:
yes
Step-by-step explanation:
your answer is correct
The absolute value is the distance from 0, so it would be 4 and -4
