The expression can be simplified as:
k^3(k7/5)^-5
= k^(3+-5) * (7/5)^-5
(Collecting the powers of k at one side and the constants at other side)
= k^-2 * (5/7)^5
(Solving thr integer powers)
= k^-2 * (3125/16807)
It would sure help a lot if I could take a peek at the drawings of the triangles.
Answer:

Step-by-step explanation:

Answer:
+0.75
Step-by-step explanation:
Answer is B because square root of 55 is 7.41