Answer:
A
Step-by-step explanation:
In this question, we are concerned with selecting which of the options best represents the difference of two squares.
Let’s have an exposition below as follows;
Consider two numbers, which are perfect squares and can be expressed as a square of their square roots;
a^2 and b^2
where a and b represents the square roots of the numbers respectively.
Inserting a difference between the two, we have;
a^2 - b^2
Now by applying the difference of two squares, these numbers will become;
a^2 - b^2 = (a + b)(a-b)
So our answer out of the options will be that option that could be expressed as above.
The correct answer to this is option A
Kindly note that;
x^2 -9 can be expressed as x^2 - 3^2 and consequently, this can be written as;
(x-3)(x + 3)
If you’re doing reflection than you would choose 1 and you explain that you are reflecting over the origin and the (x,y) values for each point of ABC will become (-x,-y) which matches Shape 1
Answer:
-x+1
Step-by-step explanation:
Answer:
x=50
Step-by-step explanation:
Since it's a straight line, 3x-20+x=180. 4x=200, x=50
Answer:
Part 1: Option C ( Allocative Efficiency)
Part 2 : Option D ( Voluntary Exchange)
Step-by-step explanation:
Part 1:
In Part 1 the school has sold all the vaccines at the given price and they will earn at least some thing form the vaccines sold. So this lies in allocative efficiency.
According to definition allocative efficiency is the efficiency every good or service is produced up to the point where the last unit provides a marginal benefit to consumers equal to the marginal cost of producing.
So the answer for the first part is part C
Part 2:
In second part the school has decided to give free medicines to people suffering from Asthma and Flu. So this lies in Voluntary exchange.
According to definition Voluntary exchange is providing of the goods free of cost to the consumers.
So school is providing free of cost vaccines to the students which is voluntary exchange and it is option D
