The perimeter of a triangle is 51 cm. The longest side is twice the length of the shortest side. The third side is 3 cm longer than the shortest side. How long is each
side? Write an equation that represents the problem and then solve it.

one is 12cm another is 24 and remaining is 15 cm

2 x 10^11 and 4 x 10^11

Step-by-step explanation:

We use scientific notation because it makes it easy to calculate things on very large and very small scales.

1 billion = 10^9

So 200 billion = 200 x 10^9

But we want that starting number to be between 1 and 10.

200 x 10^9 = 2 x 100 x 10^9 = 2 x 10^2 x 10^9 = 2 x 10^11

400 billion has the same number of zeros as 200 billion sooo

400 billion = 4 x 10^11