Answer:
34
Step-by-step explanation:
All angles of a triangle add up to 180 degrees so you would subtract from 180 with the angles you already have to get your answer. 180 - 115 - 31 = B which is 34.
<u>The right answer is:</u> Determine whether
is equivalent to 
A function is said to be even if its graph is symmetric with respect to the
. That is:

According to this definition, the statement that best describes if the function:

is even, is:
Determine whether
is equivalent to 
By doing this, we have:

As you can see:

Conclusion:<em> </em><em>The function is not even.</em>
Answer: Its they second or last one but the second one sound more clear
Step-by-step explanation:
20 / 2 = 10
15 / 2 = 7.5
10cm by 7.5cm
Hope this helps