4x^2-9=4(x^2-9/4)=4(x-3/2)(x+3/2) i think that is correct answer.
Answer:
If the data is collected in a biased manner, or the number of observations is too small, the graph could be skewed. To ensure the data is not skewed, collect a large representative unbiased sample. Hope this helps
Step-by-step explanation:
Answer:

Step-by-step explanation:
To find the inverse function, solve for y:
x = f(y)
x = 2y +3
x -3 = 2y
(x -3)/2 = y
The inverse function is ...

A similar because all triangles add up to 180 ,
they both have 80 so leaves 100 degrees left..
and they both have the same #'s 80, 60, & 40 degrees equal to 180 degrees