Answer: I think that if it is not 214 than you should just guess and see if that is the correct answer
Step-by-step explanation:
We know, Area of a Circle = πr²
Substitute the values,
A = 3.14 * (7)²
A = 153.86 Ft²
After rounding-off to the nearest whole square root, it would be: 154 Ft²
In short, Your Final Answer is 154 Ft²
Hope this helps!
Answer:
After 8 hour there will be 317.64 pounds of algae.
y-intercept: (0, 50)
Step-by-step explanation:
At time = 0 hours, there are 50 pounds of algae, after 3 hour there will be 100 pounds of algae, after 6 hour there will be 200 pounds of algae, and so on.
Exponential growth is modeled by the following equation:
y = x0*(1 + r)^t
where x0 is the amount of algae at the beginning, r is the rate of change, and y is the amount of algae after t hours. Replacing with data:
100 = 50*(1 + r)^3
2 = (1 + r)^3
ln(2) = 3*ln(1 + r)
r = exp(ln(2)/3) - 1
r = 0.26
This result can be checked as follows
y = 50*(1 + 0.26)^6 = 200
After 8 hours:
y = 50*(1 + 0.26)^8 = 317.64
The y-intercept corresponds to t = 0
y = 50*(1 + 0.26)^0 = 50
Answer:
inverse variation
Step-by-step explanation:
Answer:
b and c
Step-by-step explanation:
an equation needs to have an = sign. An equation indicates 'equal to' thus this symbol is needed.
