Answer = -1/6
Solutions in the picture attached
Answer:
2y
Step-by-step explanation:
Answer: first option.
Step-by-step explanation:
The ratio of the area of the triangles can be calculated as following:

Where
is the lenght of the given side of the smaller triangle and
is the lenght of the given side of the larger triangle.
Therefore:

It can be written as following:

The ratio of the perimeter is:

Where
is the lenght of the given side of the smaller triangle and
is the lenght of the given side of the larger triangle.
Therefore:

It can be written as following:

Answer:
x=20
Step-by-step explanation:
10x-60=140
10x=140+60
10x=200
x=20