The smaller triangle is dilated by scale factor of 1.4

so x will be :

and y will be:

good luck
Answer:
B.
Step-by-step explanation:
The first pattern is red, blue, and red, so the next one would be blue.
Next, we can see that the angles are 45 and then 90 degrees.
This means that the only reasonable answer is B.
Hypotenuse²= (4x)²+ x²=16x²+x²=17x²
Hypotenuse=√(17x²)= x√17
To find perimeter, we need to add all sides
P=x+4x+ x√17 =5x+x√17 =x(5+√17)