- How can I effectively prove theorems involving lines, angles, triangles and parallelograms?

It might depend on theorem.

Step-by-step explanation:

Sometimes you should make a value possibly important to the theorem a variable. So if the theorem says something like the inner angle of something is always twice the outer angle of another shape, try making the inner angle x and then seeing if you get 2x for the other, since it means that, regardless of what x equals, the other angle is twice it.

70,000 + 6,000 + 800 + 30

step-by-step explanation:

y = 2x

step-by-step explanation:

if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.