We are asked to find the length of

, which measures

. Using the segment addition postulate, we can add the two given expressions for

and

and make it equal to the expression for

.





We've found the value of

, but we aren't done yet. We need to plug in the value we got for

into the expression for

, which is

. Therefore,

. Hope this helped and have a great day!
Answer:
It's 60
Step-by-step explanation:
It's 60
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Answer: (x+(-4))^2 + (-67)
Step-by-step explanation:
To get -8, you must have (x-4)^2, and the expanded form of that is x^2-8x+16, so you need to subtract 67 to get 51.
Answer: 0.9738
Step-by-step explanation:
We assume that the scores follows a normal distribution.
Let
denotes the class average .
As per given we have,

Sample size : n= 12
The probability that a class of 15 students will have a class average greater than 70 on Professor Elderman’s final exam will be :

Hence, the correct answer = 0.9738