Answer:

Step-by-step explanation:
Given

Required
Determine x2, y2
Start by splitting the expression
and 
Solving for x2 in 
Multiply through by 2


Make x2 the subject;

Similarly:

Multiply through by 2


Make y2 the subject;

Hence:

Step-by-step explanation:
A: Andrew has 45 bricks and he uses 1/3 of them to build his house. He then divides the amount of bricks he has by 1/6 for his friend to have to build his shed. He all together needs to buy 272 bricks.
B:I honest to God don't know what that would be
C:45 is the number of bricks Andrew currently has. He only needs 1/3 of them and he needs 1/6 of that for his friend
Answer:
70.9 feets
Step-by-step explanation:
From trigonometry:
tan θ = opposite /Adjacent
Opposite = tree height, y
Adjacent = vertical distance between eyelevel and tree
tan 33º = y/100
y = 100 * tan 33º
y = 100 * 0.6494075
y = 64.9 feets
Distance between John's eye level and the ground = 6 feets
Total tree height = 6 + 64.9 = 70.9 feets