Answer:
x =1 or -3
Step-by-step explanation:
10 = -x^2 - 2x + 13
when you solve that equation^ you get your answer to be either 1 or -3. Since -3 is a negative number, I would just type in x = 1
Answer: all of them are x,y
Step-by-step explanation:
On the face of it, [5.3%, 8.65%].
_____
If you mean that up to 8.65% may be added to the base 5.3% rate, then the total can be in the range [5.3%, 13.95%].
Answer:
20
Step-by-step explanation:
2 cells per minute
and ten minutes of it
so ...10 x 2