Answer:
D.12
Step-by-step explanation:
sorry I just know its 12 I promise
<span>3x – y = 18
We start by plugging in 27 for y. The goal is to isolate x by itself to solve for x.
3x - 27 = 18
Then we add 27 to both sides of the equation
3x = 45
Lastly, we divide both sides by 3 to finally isolate x by itself and solve.
x = 15</span>
Answer:
y=1.3x-3
or
y=4/3x-3
Step-by-step explanation:
1.3 is the slope (the change in between points)
-3 is the y intercept (the point on the y-axis)
answer
0
Step-by-step explanation:
you plug in the 2 into every xbox value
Answer:
a. Expected frequency of losses per semester = 0*0.08 + 5*0.16 + 10*0.28 + 15*0.32 + 20*0.14 + 25*0.02
Expected frequency of losses per semester = 11.7 losses per semester
b. Variance = (0-11.7)²*0.08 + (5-11.7)²*016 + (10-11.7)²*0.28 + (15-11.7)²*0.32 + (20-11.7)²*0.14 + (15-11.7)²*0.02
Variance = 10.9512 + 7.1824 + 0.8092 + 3.7848 + 9.6446 + 3.5378
Variance = 35.61
c. As losses equal $60, expected losses per semester = 11.7*$60 = $702
d. Expected losses of all textbooks per semester = 250*11.7*$60 = $175,500