-4x+3y=15
3y=15+4x
y=(15+4x)/3= 4/3x +5
slope: 4/3
y-intercept: 5
The expected value is just the weighted average of how much one ticket wins. To calculate it, we need to find the probabilities of winning each dollar amount, multiply each probability with it's respective dollar amount, then find the sum.
Let's call the winnings from one ticket X:
P(X=30) = 4000/2000000 = 0.002
P(X=800) = 500/2000000 = 0.00025
P(X=1200000) = 1/2000000 = 0.0000005
E(X) = 30*P(X=30) + 800*P(X=800) + 1200000*P(X=1200000) = 0.06 + 0.2 + 0.6 = 0.86
The answer is $0.86
Answer:
A and D
If you take all the numbers and add them together they all equal and equivalence to 1.6a and 1.7d. So, if you take the numbers then add them it is A and D
we need more stuff sorry but we can't awnsers it doesn't give enough instructions but from that I would say incorrect
Answer:
4 m
Step-by-step explanation:
The geometry is that of a right triangle with hypotenuse 8.5 m and one side of length 7.5 m. If "b" represents the distance from the base of the ladder to the wall, the Pythagorean theorem tells us ...
b² + 7.5² = 8.5²
b² + 56.25 = 72.25
b² = 16 . . . . . . . . . . . . . subtract 56.25
b = 4 . . . . meters . . . (take the square root)
The base of the ladder is 4 m from the wall.
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You may recognize this as the 8-15-17 Pythagorean triple, scaled by 1/2.
