Your expected value is -$0.62.
We multiply the probability of winning by the amount won. There are 12 face cards out of 52 cards, and the amount won is 4:
12/52(4)
We also multiply the probability of losing by the amount lost. There are 40 cards that are not face cards out of 52, and the amount lost is 2:
40(52)(-2)
Adding these, we have:
(12/52)(4)-(40/52)(2) = -0.62.
1.3x-2.39=5.76x+4.74
+2.39 +2.39
_________________
1.3x=5.76x+7.13
-5.76x -5.76x
______________
-4.46x=7.13
/-4.46 /-4.46
__________
x=-1.6
D
<span>The surface of the triangle count formula
A = b*h*1/2
A - area
b - base
c - height
</span><span>The first triangle
A</span>₁ = b₁*h = 6in * 8in *1/2= 24in²
<span>The second triangle
</span>A₂ b₂*h = 10in * 8in*1/2 = 40in²
The total area of the two triangles is 24in² + 40in² = 64 square inches
Answer:
C.(2.5,3.5)
Step-by-step explanation:
Graphing both equations, we can see where they cross
The x coordinate is about 2.5 and the y coordinate is about 3.5
Answer:
y=20 , x =30
Step-by-step explanation:
x+y=50;
20x+30y=1200
20x+20y=1000, multiplying the top by 20
-20x-30y=-1200, subtracting the second.
-10y=-200
y=20 adult tickets ($600)
x=30 student tickets ($600)
(add up to $1200)
