Answer:
4/7
Step-by-step explanation:
if you add the 3 and the 1 it makes 4, since the denominators are the same you don't add them you keep them the same
Answer:
-5
Step-by-step explanation:
-7u+9=2
-7u=2-9
-7u=-7
7u=7
u=7/7
u=1
3(1)-8=3-8=-5
Answer: 0.4207
Step-by-step explanation:
Let 
be the sample mean area.
Given: Population mean : 
sq. feet
Standard deviation: 
sq. feet
Sample size : n= 10
The probability that the sample mean area is 
or less if the manufacturer’s claim is true.
Required probability = 0.4207
The cost of the meal multiplied by .19
Answer:
The exact length for each side is 6.36.
Step-by-step explanation:
I used a calculator.
