Answer:
option (2) is correct.
is in the scientific notation form.
Step-by-step explanation:
Given: Some expressions
We have to choose which expressions is written in scientific notation.
For an expression to be in scientific notation the most important requirement is that the whole number is between 1 and 10, but not including 10.
that is 
, 1 ≤ a < 10 and n is integer.
Thus, out of given only is in the scientific notation form.
Thus, option (2) is correct.
For question 4, it would be a^2+b^2=c^2. So you would set up the equation as a^2+14^2=18^2. the third side would equal approximately 23cm.
Answer:
The answer to this problem is True.
Answer:
(-2,4] and [7,α)
Step-by-step explanation:
the domain is open at -2 but closed at 4 and also closed at 7 but open till infinity..
Step-by-step explanation:
y = 3cos(x) - 5
Domain = 2sin(x)
Range = 5
