Answer:
Son résultat est faux parce que son numéro est peut-être mal numéroté ou parce qu'il utilise une solution différente.
Step-by-step explanation: S'il vous plait brainliest!
Answer:
0.5
Step-by-step explanation:
The probability that the first mouse turns left and the second mouse turns right is 0.5 × 0.5 = 0.25.
The probability that the first mouse turns right and the second mouse turns left is 0.5 × 0.5 = 0.25.
So the probability that only one mouse turns left is:
P = 0.25 + 0.25
P = 0.5
Another way of looking at it: the probability that only one mouse turns left is 1 minus the probability that both turn left or both turn right.
P = 1 − (P(both left) + P(both right))
P = 1 − (0.5 × 0.5 + 0.5 × 0.5)
P = 0.5
Answer:
Step-by-step explanation:
Let x represent the number of oxen. Then the number of ducks is 22-x and the number of legs is ...
4x +2(22 -x) = 72
2x +44 = 72 . . . . . . . simplify
x +22 = 36 . . . . . . divide by 2
x = 14 . . . . . . . . . subtract 22; the number of oxen
22-x = 8 . . . . . the number of ducks
There are 8 ducks and 14 oxen in the barn.
9/160 is <span>0.05625
_
160/9 is </span>17.7
Answer:
-33
Step-by-step explanation:
-12x + 1 + 9x = 100
-3 x = 99
x = -33
