Answer:
A negative number would be reasonable in the solution of the rate of the investment. It would be reasonable because Johnny started out with $41,745 in his account and ended up with $39,974 which means that the rate has to be negative.
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I think it's D bc I looked it up in internet and it's what It gave me
Answer:
-120 degrees.
Step-by-step explanation:
This triangle has a rotational symmetry of 3 (it repeats its orientation 3 times as it makes a complete circle around the center), so the angle of rotation is 360 / 3 = 120 degrees.
As the rotation is counter clockwise strictly speaking the answer is -120 degrees.
Answer:
The solution of the linear system is:
and 
Step-by-step explanation:
The following linear equation is solved as follows:
After some algebraic manipulation:
And finally,
The solution of the linear system is:
and
