Answer:

Step-by-step explanation:
9,09
- 0,1
____
8,99
Line up the decimals CORRECTLY as so, and you will arrive at this answer.
I am joyous to assist you anytime.
Answer:

Step-by-step explanation:
Let's say the numbers are "a" and "b"
thus

set the derivative to 0, and check the critical points, there's only one anyway
and do a first-derivative test, to see if it's a maximum
The answer is an Interval.
Hope this help.
Answer:
All values of x are solutions
Step-by-step explanation:
−15x+4 ≤ 109 OR −6x + 70 > −2
-15x ≤ 105 OR -6x > -72
-x ≤ 7 OR -x > - 12
x ≥ -7 OR x < 12
Answer
x ≥ -7 OR x < 12
All values of x are solutions