Answer:
None of them i think
Step-by-step explanation:
Answer:
Let x be how far from the tower can it be placed
by Pythagorus theorem
x^2 + 96^2 = 105^2
x=√(105^2 -96^2 )=√1809 = 42.532340 = 42.5 ft
Answer:
$450
Step-by-step explanation:
Let E be the amount of money Ethan starts with, J be the amount Jun Wei starts with, and R be the amount Raj starts with. Let M be the total amount of money to start with.
To start:

This means Ethan has 5/20 of M, the money to start with. This reduces to 1/4 of M.
Afterwards:

This means Ethan has 3/13 of the remaining money (which is M-50!) after giving up 50. So
E = (M/4), or 4E = M
and

We know 4E = M, so we can substitute that in:

That's how much money Ethan had to start with. But we're asked how much he has AFTER giving $50 away, so that's $450.
You can solve using the pythagorean theorem which is
a^2+b^2=c^2 where a and b are the legs and c is the hypotenuse in a right triangle.
12^2+x^2=24^2
144+x^2=576
x^2=432
x =20.78 (approximately)
Answer:

Step-by-step explanation:
Denote first four terms of the geometrc sequence as

Note that

Then the common ratio is

Therefore, the recursive formula for the geometric sequence is
