by pythagorean formula, the last side is √(61)
by cos rule
cos A

A = 39.81
Answer:
Your selection is appropriate
Step-by-step explanation:
A negative exponent in the numerator is equivalent to a positive exponent in the denominator, and vice versa.
... a⁻² = 1/a²
____
2⁴ multiplies the variable expression no matter which way it is written.
Answer: negative ; -144 sowwy if im wrong
Step-by-step explanation:
-4, 2, -3 , 6
-4 times -3 = -12
6 times 2 = 12
-12 times 12 = -144
Each term differs by -68 and the first term is -68, we have:

As an expession it's just -68n.