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Surface area of the cube
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6(2.5 x 2.5) = 37.5m²
<em>(* Each area is 2.5 x 2.5, and there are 6 sides to the cube)</em>
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Surface area of the rectangle prism
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2(11 x 7) + 2(9 x 7) + 2(9 x 11) = 478m²
<em>(* The opposite side of the rectangle area is the same, therefore x2)
</em>
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Overlapping area
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2.5 x 2.5 = 6.25m²
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Surface area of the composite figure
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37.5 + 478 - 2(6.25) = 503m²
<em>(* The bottom of the cube and the top of the rectangle prism overlapped, so the area is overlapped twice, minus 2 times of that area)</em>
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Answer: 503m²
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Answer:
a) K3050 and b) K1150
Step-by-step explanation:
a) Add all his expenditures
i.e: K300+K150+K100
=K3050
b) Subtract the remaining of his spendings from the total
i.e: K4209 - K3050
=K1150
Answer:
- 2 and 3 are the the growth rates parameter for x and y respectively
- 16 and 20 are the carrying capacities for x and y respectively
- 2 and 7 measures the benefit to x and y of the interaction of the two species.
The species compete each other.
Step-by-step explanation:
When we have a population model for two species as we have here, the differential equations looks like this:


Here:
a and d are the the growth rates parameter for x and y respectively
N and M are the carrying capacities for x and y respectively
c and f measures the benefit to x and y of the interaction of the two species.
So in our case we have:


Therefore:
- 2 and 3 are the the growth rates parameter for x and y respectively
- 16 and 20 are the carrying capacities for x and y respectively
- 2 and 7 measures the benefit to x and y of the interaction of the two species.
The term xy determine the if the species are cooperating of competing, so in this case have negative xy term in the second equation, it means the presence of either species decreases the rate of change of the other, so the species compete each other.
I hope it helps you!
B
If you have the variable near a division sign you automatically have to do the inverse opperations. You would have to multiply on the problem and each answer was either +, -, /, or x. Therefore, the answer is B.