Use sin(45)= 5sqrt2/x
Then you would multiply x to sin(45) then divide sin(45) by 5sqrt2
and you would get
10 for M
You would then use Pythagorean theorem and get
3sqrt 10
Hope this helps.. BRAINLIEST
Answer: 
Step-by-step explanation:
To solve for y, we want to make sure y is isolated. SInce y is already isolated, all we need to do is divide both sides of the equation by 3.
[divide both sides by 3]
or 
$50 = $625 (r)(4), so r = 50 / (4*625) = 0.02. This is 2% annually.
The total length of the tree will be given by:
Total=(elevation above the ground)+(length of the root)
elevation=28 ft
length of the root=13
thus the length of the tree will be:
28+13
=41 ft