its good to know if a number is positive or negative because something as simple as forgetting the signs such as - + could drastically change your answer
Answer:
D.
Step-by-step explanation:
tan A = 6/7.5 = 0.8
m < A = 38.7 degrees.
It’s hard to see the image
<span>1. D. Concave Hexagon
2.
(n - 2)180 = 2160
n - 2 = 12
n = 14
</span>
<span>C. 14
3.
</span><span><span>(n - 2)180 = 3060
n - 2 = 17
n = 19
</span>
<span>D. 19
4.
[(n - 2)180]/n =
</span></span><span>= [(15 - 2)180]/15
= 13(180)/15
= 156
</span>
<span>C. 156°</span>
Is there any sign between 12 and -17 on the left side?
if no, then this is to be interpreted as a multiplication and is equal to -204.
so we have -204=-17+k
which means
-204+17=k
-187=k
so k is -187
if thre is a plus between the 12 and (-17) then k would be 12 (and both sides of the equation would be essentially the same, just inverted order)
