Answer: Scale Factor = 1/4
Step-by-step explanation:
The base of triangle X has a length of 12, and the base of triangle x' has a length of 3. Therefore, the scale factor is 1/4, because 12 x 1/4 = 3.
Being able to write fractions in simplest form can make operations much easier. Also, to compare fractions, some may have to be in the simplest form.
Answer:

Step-by-step explanation:
Find the area of the 4 triangles and add them.
Area of triangle = base × height × 0.5

I believe its 3. But i think you should wait for someone else to answer cause I might be wrong.
Really? its .1000 it goes like this "1" is the tenths the "3" is the hundredths the "2" the thousands "5" ten-thousands<span />