2000 has three zeros and 10 has one, so you add another zero to 2000 so it makes it 20,000
-2x^2+8x+5 is the standard form
Answer:

Step-by-step explanation:
Given that,
The base of a triangle = 2 km
The perpendicular height of the triangle = 
We need to find the value of x. It is the Hypotenuse of the triangle. It can be solved as :

So, the value of x is equal to
.
Answer:
8
Step-by-step explanation:
It is very simple the answer is 12.7 cm
You can simply multiply 5 with 2.54 to get the answer
Hope it helps : )