The initial mass of a certain species of fish is 6 million tons. The mass of fish, if left alone, would increase at a rate pro
portional to the mass, with a proportionality constant of 2/yr. However, commercial fishing removes fish mass at a constant rate of 15 million tons per year. When will all the fish be gone? If the fishing rate is changed so that the mass of fish remains constant, what should that rate be?
1 answer:
You might be interested in
Answer:
24 meters
Step-by-step explanation:
The area of a circle can be found using the following formula.
We know that the area is 144pi m^2.
Substitute 144pi m^2 in for a.
We want to find the diameter. First, we must find the radius. We have to get the variable, r, by itself.
Divide both sides of the equation by pi.
The variable, r , is being squared. The inverse of a square is the square root. Take the square root of both sides of the equation.
The radius of the circle is 12 meters, but the question asks for diameter. The diameter is twice the radius.
The radius is 12 m.
Multiply
The diameter of the circle is 24 meters.
Answer:
A group of students formed a circle during a game.The circumference of the circle was about 43.96 feet,and the diameter of the circle was 14 feet.Which expression best represents the value of π?
The expression which represents the value of π is option C from the attachment that is π = 43.96/14
Step-by-step explanation:
Given:
Circumference of the circle = 43.96 feet
Diameter f the circle = 14 feet
So,
We know that :
Circumference of the circle = or
Re-arranging the formula:
⇒
⇒
⇒
⇒
Plugging the numeric values:
⇒
So the expression for π is 43.96/ 14,and option C is the correct choice.
