Answer:
c = 49°
Step-by-step explanation:
Inside of the triangle angles:
- c–18°
- c–16°
- 180°-(c+15) → -c+165
these angles sum up to total 180° angle
-c+165+c-16°+c–18° = 180
c +131 = 180
c = 180° - 131°
c = 49°
Answer:
4.
Step-by-step explanation:
7n - 12 = 16
7n = 16 + 12 = 28
Since 7n = 28, n = 28 / 7 = 4.


Multiply the sides of the equation by ( b + 5 ) :


Subtract the sides of the equation minus 10 :


Divided the sides of the equation by 2 :

____________________________
And we're done.
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Answer:
1. D
2. C
Step-by-step explanation:
100 - 90.5 = 9.5
1.9n《9.5
n《5
68.25 + 4.5n > 75
4.5n > 6.75
n > 1.5
Answer:
i dont know
Step-by-step explanation:
sorry