Answer:
a = 14
Step-by-step explanation:
The mean is the sum of the values divided by the number of values.

Answer:
250:2
Step-by-step explanation:
Hope it helps!
Answer:
y = x - 3; 9 diagonals
Step-by-step explanation:
Find the equation: y = x - 3
Plug in 12: y = 12 -3
Solve: y = 9
9 diagonals
Hope this helps! Plz mark brainliest
Answer:
Probably equal to 6 or 7.
Step-by-step explanation:
If you plug in the respective numbers (x,y) you'll get the answer choice C. 19=4(4)+3 : 19=19