12 pounds divided up between 27 sandwiches is 0.44 pounds for each sandwich. 12/27=0.44
Answer:
$168
Step-by-step explanation:
1 dozen = 12
proportions
12 books ⇔ $144
14 books ⇔ $B
B = 144*14/12
B = $168
Here is dependence between scores and x-values:
where is the mean, is standard deviation and i changes from 1 to 2.
1. When i=1, then
2. When i=2, then
Now solve the system of equations:
Subtract first equation from the second:
Then
Answer: the mean is 62, the standard deviation is 20.
Answer:
x = 3.16
Step-by-step explanation:
x * x = 10
square root both sides
x is appr. 3.16
Answer:
x = 5
Step-by-step explanation:
Ashley and Adam spent a total of 31 hours on their projects so: 3x+2+4x-6 = 31
3x+2+4x-6 = 31
7x-4 = 31
7x = 35
x = 5