Answer:
Step-by-step explanation:
So we have the inequality:
This means that our solution is all numbers <em>less than or equal to </em>-4. Therefore, in interval notation, this is:
This represents all the numbers from negative infinity up until -4. This is equivalent to the inequality.
Answer:
i think its 2,080
Step-by-step explanation:
the diameter is and the radius r=
=
and height is h=
.
Answer:
1. 516 ppm; 2. 561 ppm
Step-by-step explanation:
1. CO₂ increase at old rate
Time = 2100 - 2010 = 90 years
Increase in CO₂ = 90 yr × (1.4 ppm/1 yr) = 126 ppm
CO₂ in 2010 = 390 + 126 = 516 ppm
At the old rate, the CO₂ concentration in 2100 will be 516 ppm.
2. CO₂ increase at new rate
Time = 2100 - 2010 = 90 years
Increase in CO₂ = 90 yr × (1.9 ppm/1 yr) = 171 ppm
CO₂ in 2010 = 390 + 171 = 561 ppm
At the new rate, the CO₂ concentration in 2100 will be 561 ppm.
