D = sq.root of((x2 - x1)^2 + (y2 - y1)^2)
sq.root of 13 = sq.root of((x - (-2))^2 + (1 - 3)^2)
= sq.root of((x + 2)^2 + (-2)^2)
= sq.root of (x^2 + 4x + 4 + 4)
= sq.root of (x^2 + 4x + 8)
Now if we square both sides:
x^2 + 4x + 8 = 13
x^2 + 4x - 5 = 0
(x + 5)(x - 1) = 0
x = -5 or x = 1
Answer:
The correct answer is B.
We have 4 / 10 = ( 2 x 2 ) / ( 2 x 5 );
6 / 15 = ( 3 x 2 ) / ( 3 x 5 );
8 / 20 = ( 4 x 2 ) / ( 4 x 5 );
Step-by-step explanation:
9+4+7+3+10+9=42
42÷6= 34.5. I believe "mean" is the same as avgerage.
They both have right angles and have the same angles overall. Essentially they are the same size, one is just expanded bigger than the other. It might be dilation. The inside line so indicate the similarity in angle sizes.
