<span>Given:
xbar = 20 min
standard deviation = 8 min
total sample = 240
Required:
how many gym members are expected to spend 4 min and 36 min on a treadmill today
Solution:
sd</span>² = (∑(x - xbar)²) / N - 1
there are 42 gym members at 4 minutes and 200 gym members in 36 minutes.
Answer:
b,d,f are the answers......
Answer:
6x-1
Step-by-step explanation:
I dont know how to explain but it is correct
Answer:
(x, y) = (8, 2)
Step-by-step explanation:
substitute x = 4y into the other equation
2(4y) + 4y = 24
8y + 4y = 24
12y = 24 ( divide both sides by 12 )
y = 2
substitute y = 2 into x = 4y
x = 4 × 2 = 8
solution is (8, 2 )
I didn't know what you meant by phrase, so I put in a few:
X divided by 15
X over 15
There are some lollies they are to be divided between 15 children
