Answer: 1.83
Step-by-step explanation:
Z = (x - mean) / standard deviation
= (97-75) / 12
= 22/12 = 11/6 = 1.83
Answer:
x = 9 or x = 0 or x = -2
Step-by-step explanation:
Solve for x:
3 x^3 - 21 x^2 - 54 x = 0
The left hand side factors into a product with four terms:
3 x (x - 9) (x + 2) = 0
Divide both sides by 3:
x (x - 9) (x + 2) = 0
Split into three equations:
x - 9 = 0 or x = 0 or x + 2 = 0
Add 9 to both sides:
x = 9 or x = 0 or x + 2 = 0
Subtract 2 from both sides:
Answer: x = 9 or x = 0 or x = -2
Answer:
2x+5
Step-by-step explanation:
If you say something is twice a number you multiply it by 2. Therefore we have 2x, x meaning whatever number you want to plug in. Five more means that you have to add 5 to the previous solution.
I also believe it’s the first one
Answer:
c=1.49n+7.99
Step-by-step explanation:
c= cost
n= songs
multiply the cost of songs plus the monthly fee, due to it only being once a month
