They are -9 and 8. because since 9 times 8 is 72, you need the 9 to be negative to add to -1
Since the values are equally likely and equally spaced, their mean is the middle one.
the mean is 1/5
The variance is the average of the square of the deviations from the mean.
σ² = (1/3)((-1/10)² + 0² + (1/10)²) = 2/300
the variance is 2/300
Answer:
none
Step-by-step explanation:
-14[x±2]=-14x±28
14[-x±12]=-14x168
14[-x±2]=-14x±28
-14[-x±12]=-14x±168
Answer:
Can't factor..........
Step-by-step explanation:
Answer:
Don't know you answer options, but Elijah can go on 5 rides.
<u>Something like x≤ 5</u>? This would mean the number of rides Elijah can go on in less than or equal to 5
Step-by-step explanation:
Subtract the entrance fee from the amount of starting money.
$20 - $3.75 = $16.25 for rides
Divide $16.25 by $3.25 per ride to find the number of rides Elijah can go on.
$16.25 ÷ $3.25 = 5 rides
To check, multiply 5 by 3.25, and then take that product and add 3.75. You should get 20.
