Answer:
it's -7 + 5= -2 I think im not sure
One way to find the y int is to sub in 0 for x and solve for y
-3x + 9y = -54
-3(0) + 9y = -54
9y = -54
y = -54/9
y = -6....so ur y int is -6 or (0,-6)
Step-by-step explanation:
isosceles triangle (|>) this but right side up
Answer:
(3C1 × 4C1)/12C2
Step-by-step explanation:
Total electives = 3 + 4 + 5 = 12
Art: 3C1
History: 4C1
1 Art & 1 History = 3C1 × 4C1
Probability = (3C1 × 4C1)/12C2
The expected value of the first game is -$0.50 and of the second game is -$0.52.
There are 10³ possible numbers for the lottery, and only 1 of them will match in the correct order; this gives a probability of 1/1000. To find the expected value, we multiply this by the winnings (499 after the $1 cost); we also multiply the probability of losing (999/1000) by the amount lost (-1):
1/1000(499)+999/1000(-1)
499/1000 - 999/1000 = -500/1000 = -0.50
For the second game, since the number is "boxed", there are 3! ways to get the correct digits; this gives a probability of 6/1000. Multiply this by the winnings, 79 (after the $1 cost); multiply the probability of losing (994/1000) by the loss (-1):
6/1000(79) + 994/1000(-1) = 474/1000 - 994/1000 = -520/1000= -0.52