Double angle (or half angle, depending how you look at it) identities:
So we have
Note that when taking the square root, we should take into account that that could yield two possible solutions, but we know 
and 
, so it's also the case that 
.
Also, the reason we have equality in the last step can be explained like so:
(not unlike the process used to complete the square)
……..,,….,,,,…………,,,,,,…….
oksian1 [2.3K]
Ey kamusta kana bat ka nandito?
Answer:
B
Step-by-step explanation:
I just solved it now
you are welcome
It is possible that the proportion of adults in Country A equal to the proportion of adults in Country B. This statement does not necessarily mean that the populations of adults in the two countries are equal. It is the proportion and not the exact population. This occurs when the ratio of the population of adults to the total population of Country A is the same as that of the ratio of the population of adults to the total population of Country B.
Answer:
3 16 inch pizzas because 16 x 3 = 48 and they needed 48 square inches so 3 pizzas is your answer.
Step-by-step explanation:
