Answer:
The answer is 238 :)
Step-by-step explanation:
Answer:
You can use the equation a^2+b^2=c^2 using this you can find that the value of the 3rd side is 5 hope this helps <3
It is now possible to find the margin of error, the reason being that the confidence level is not given. However the 'standard error' of the sample mean can be found as follows:

Converted to a percentage, we get 1.11% which is the third choice of answer.
Answer:
12x18
Step-by-step explanation:
Answer:
x = 1, y = 2
Step-by-step explanation:
-5x + y = -3, we get y = 5x - 3.
Then plugs into the second equation, we get
-x - 5 (5x-3) = -11.
-x - 25x + 15 = -11,
-26x = -26
x = 1,
plugs x = 1 to y = 5x - 3, we get y = 2.