Answer:
The mean is 0.26
The standard deviation is 0.5765
Step-by-step explanation:
An image showing the step by step solution is attached.
Let
R = Ralph's age
S = Sara's age
First statement is translated as:
S = 3R
Second statement is translated as:
S + 4 = 2(R + 4)
Use the first equation to be substituted into the second one in terms of R which is the one we are actually going to solve for Ralph's age.
Since S = 3R, then
3R + 4 = 2(R + 4)
3R + 4 = 2R + 8
3R - 2R = 8 - 4
R = 4 years old
Answer:
Can you provide a picture?
I cannot help you if you don't.
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Answer:
-18w+2
Step-by-step explanation:
6*-3w=-18w
1/3*6=2