Answer:
f(0,0)=ln19
Step-by-step explanation:
is given as continuous function, so there exist 
and it is equal to f(0,0).
Put x=rcosA annd y=rsinA
we know that 
, so we have that
So f(0,0)=ln19.
I hope this helps you
3t÷3 < -15÷3
t < -5
Answer:
A) arithmetic sequence
g(n) = 20 + 3n
Step-by-step explanation:
Each minute, the number of pages increases by 3, which means the common difference is 3 (because it is being added, not multiplied).
If there is a common difference, it's an arithmetic sequence. (Geometric sequences have common ratios.)
If she starts at 20 pages, then you just need to multiply 3 by the number of minutes passed (n) and add it to 20 to find the page she's on.
48 inches = 4 feet, therefore 4:2, but simplified it is B. 2:1
Answer:
135 days
Step-by-step explanation:
Often, we measure work in man·days. This piece of work requires ...
(45 man)·(90 days) = 4050 man·days
When there are only 30 men, the number of days required can be found by dividing this work by the number of men:
4050 man·days/(30 man) = 135 days
_____
Another approach is to realize the time is inversely proportional to the number of men. If the number of men is 30/45 = 2/3 the original, then the time will be 3/2 the original, or ...
(3/2)·90 days = 135 days.
