It is A. x = 2√3, y = 4√3
A = 2 * a^2 * (1 + sqrt 2)
Where 'a' is the side length.
A = 2 * 10^2 * (1 + sqrt 2)
A = 2 * 10^2 * 2.41421356
A = 2 * 100 * 2.41421356
A = 200 * 2.41421356
A = 482.842712
Therefore, the closest one is C.
Answer:
The formula to get the rate R would be:
principal x (1+R)^time = (principle + interest)
=> 3890 x (1 + R)^4 = 5908
=> (1 + R)^4 = 5908/3890
=> (1 + R)^4 = 1.5188
=> 1 + R = 1.11
=> R = 1.11 - 1 = 0.11 = 11%
Hope this helps!
:)
Keep in mind that, when the logarithm base is not explicitly written, base 10 is assumed, therefore,
Answer:
Part 1) 
Part 2) 
Part 3) 
Step-by-step explanation:
see the attached figure with letters to better understand the problem
step 1
In the right triangle ABC
we know that
The triangle ABC is a 
so
Is an isosceles right triangle
The legs are equal
therefore
AC=AB

step 2
Find the length side BC
Applying the Pythagorean Theorem]



step 3
Find the value of y
In the right triangle BCD
----> by SOH (opposite side divided by the hypotenuse)

Remember that

so

step 4
Find the value of z
In the right triangle BCD
----> by CAH (adjacent side divided by the hypotenuse)

Remember that

so
