Answer:
8.2 minutes
So 13 miles would take you roug.hly 8.2 minutes... so going the average speed limit would get you there very
Step-by-step explanation:
Answer:

Step-by-step explanation:
Let's subtract:



Answer:
<h2>4 bilion = 4 × 10⁹</h2>
Step-by-step explanation:
The scientific notation:

where

4 billion:
in USA: 4,000,000,000
in Europe: 4 000 000 000 000

Δ = 1 + 4*20 = 81
x' = (-1 + 9)/2 = 4
x'' = (-1 - 9)/2 = -5
4² + 4 - 20 = 0
(-5)² - 5 - 20 = 0
Ok !