y = x² is the parent function.
This is a parabola, with minimum turning point at (0, 0 ) and axis of symmetry the y- axis
y = x² - 5
is the graph of x² translated 5 units vertically down ( indicated by - 5 )
with minimum turning point at (0, - 5 )
Place values:
As each is in a different place value, when we add them neither will affect the other, meaning:

Answer: B 4.39
Answer:
900 different combinations.
Step-by-step explanation:
He always where a shirt, pant, a pair of socks, and a pair of shoes. This type of question is asking for the amount of different ways he can wear the outfits. To do so, simplify just multiply all the numbers together:
12 x 3 x 5 x 5 = 36 x 25 = 900
There are 900 different combinations he can wear.
~
From the double-angle identity,

we can rewritte our given equation as:

By factoring 2cosx on the left hand side, we have

This equation has 2 solutions when

From equation (A), we obtain

and from equation (B), we have

On the other hand, we can find one more solution from the original equation by substituting x=0, that is,

then, x=0 is another solution. In summary, we have obtained the following solutions:

However, the intersection of the last set is empty. So the unique solution is x=0 as we can corroborate on the following picture:
Therefore, the solution set is: {0}