Answer:
(b) 0.251
Step-by-step explanation:
1. Standard deviation equation:

Where X is the mean of the data, and N the amount of data. Then, N=5
2. Estimate the Mean:

3. Caclulate Standard deviation:


B
Step by step explanation This is how I got the answer to your question and I gave you the solution I hope this helps you out
Step-by-step explanation:
Given
y = x + 3.....equation 1
y = x - y
or y + y = x
or 2y = x
or y = x / 2......equation 2
Now
Putting equation 2 in equation 1
x / 2 = x + 3
x - x/2 = - 3
<u>2x</u><u> </u><u> </u><u>-</u><u> </u><u>x </u> = - 3
2
x / 2 = -3
x = - 6
Now
y = x/ 2
= - 6/2
= - 3
Hope this helps
Answer:
The answer to your question is x = 6
Step-by-step explanation:
To solve this problem use proportions. Just look for the right sides so the proportion be correct.
Sides of the small triangle = Sides of the big triangle

Solve for x

Simplification
x = 
Result
x = 6