Answer:
A right triangle consists of two legs and a hypotenuse.
Step-by-step explanation:
The two legs meet at a 90° angle and the hypotenuse is the longest side of the right triangle and is the side opposite the right angle. There are a couple of special types of right triangles, like the 45°-45° right triangles and the 30°-60° right triangle.
Given:
Principal value = $12000
Rate of interest = 2.5%
To find:
Total amount after 15 years.
Solution:
Formula for amount discontinuously compounded interest is

where, P is principal, r is rate of interest and t is time in years.
Substitute P=12000, r=0.025 and t=15 in the above formula.





Therefore, the amount after 15 years is $17459.897.
a=144
b=48
c=60
d=132
This is what I got using my(online) calculator
It's gonna be an irrational number because the length of the hypotenuse is 6.40312....... cm


An irrational number cannot be written as a simple fraction and the decimals would keep on going without a pattern (if it was repeating, it would be rational).
I'm not sure if those numbers are negatives or thats just a hyphen but:
N(-5/8)=-0.40
Division is always the opposite of multiplication
-0.40/(-5/8)=0.64
N=0.64