Answer:
The zeroes are and
On the graph, each of these zeroes represent the x-value where the equation will intersect with the x-axis.
Step-by-step explanation:
We have the quadratic equation
To factor this we need to find two numbers that fulfill the following:
They add up to 1
They multiply to give you -20
These two numbers are -4 and 5
This means that the quadratic equation in its factored form will be:
Now that we have the factored form, we need to set and solve for x
From this factored form, we can see that when and the result will be zero. Just to check we can plug in each of these x values
The result of this confirms that x=4 and x=-5 are indeed the zeroes of this equation.
Each of these zeroes represent the x-value where the equation will intersect with the x-axis.
Answer:
Optimal combination of goods can be determined in an economy that produces only two goods, with production of extra units of the two goods at a minimal marginal social cost. The consumption of the additional units of the two goods being produced will be benefitted by the consumers. This is known as marginal social benefit.
Step-by-step explanation:
Marginal social cost is the change in society's total cost brought about by the production of an additional unit of a good or service. It includes both marginal private cost and marginal external cost.
Marginal social benefit is the change in benefits associated with the consumption of an additional unit of a good or service. It is measured by the amount people are willing to pay for the additional unit of a good or service.
4w-7k=28
-4w -4w
-7k=-4w + 28
/-7 /-7
k=0.57 + 4
Answer:
1200 L
Step-by-step explanation:
2/3 of the tank is removed, so 1/3 of the tank is left. This is equal to 400 L.
1/3 V = 400 L
V = 1200 L
The volume of the tank is 1200 L.