Answer:
square metres of plant materials required to support the fox = 3650 m²
Explanation:
From the given information:
the daily caloric requirement of the fox = 800
In a year, we have = 800 kcal × 365 /year = 292,000 kcal/year
Also, only 10% of the energy at a particular trophic level can be passed onto the next.
the net productivity of the plant material = 8000 kcal/m²/yr
So, using 10% of energy at a particular level, the fox only need 80 kcal/m²/yr
The objective is to determine in square meters, how many materials are required to support the fox.
square metres of plant materials required to support the fox =
= 3650 m²
Answer:
19
20
21
Explanation:
Givens
Let the first integer = x - 1
Let the second = x
Let the third = x + 1
Equation
x - 1 + x + x + 1 = 3x
Solution
3x = 2(x + 1) + 18 Remove the brackets
3x = 2x + 2 + 18 Combine the terms on the right
3x = 2x + 20 Subtract 2 x from both sides
x = 20
x - 1 = 19
x +1 = 21
Check
Sum = 60
2*Largest number = 42
18 more than 42 = 60