Answer:
9
Step-by-step explanation:
a²+b
Substituting values,
=> (-2)^2+5
=> 4 + 5
=> 9
Answer:
x = 27
y = 29
Step-by-step explanation:
Answer:

Step-by-step explanation:
Given



Required
Determine CD
Since, C is a point on BD, the relationship between the given parameters is;

Substitute the values of BD, BC and CD

Collect Like Terms


Divide both sides by -4


To determine the length of CD;
Substitute 3 for x in 
Hence;

For question between 13 -> 17 replace n with the number.
Example:
13.) n = 2; 2+(-1) = 1
180 I believe because all angles in a triangles will ALWAYS add up to 180