Answer:
-1 <= x <= 1
Step-by-step explanation:
√((1-2x+x^2)+2-2x^2)
= √((1-x)^2 + 2*(1-x)(1+x) )
điều kiện là 1 - x > =0 và 1+x >=0
giải 2 bất phương trình trên ta thu đc kết ququả
Answer: 321-134= 187
Step-by-step explanation:
From the graph, we can actually see that as the altitude increase, the
value of the pressure decreases. Or if we say it the opposite way, as the
altitude decreases (approaches sea level), the pressure increases, therefore
the answer is:
As the altitude approaches sea level, the atmospheric
pressure increases.
Choice A. 75%. 1\4 is equal to 25%. 2\4 is equal to 50%. 3\4 is equal to 75%. 4/4 is equal to 100%
Answer:

Step-by-step explanation:
Given


Required
The area (A) of the disk
This is calculated as:

So, we have:




--- approximated