30 times by 6 because it goes down by 6 which is 180 and take awat from 12 which is -168
And don't forget that it is a negative. so leave a minus before the number.
10 because 25 goes into 100 4 times 40 divided by 4=10
Answer:
11/18
Step-by-step explanation:
The desired probability is the sum of ...
... (probability of choosing a coin) × (p(heads) on that coin)
Since the coins are chosen at random, we assume the probability of choosing a given coin is 1/3. Then ...
... p(heads) = (1/3)·(1/2) + (1/3)·1 + (1/3)·(1/3) = 1/6 + 1/3 + 1/9 = (3 +6 + 2)/18
... p(heads) = 11/18
Answer:
-6 - square root 31, -6 + square root 31