Answer: 6
Step-by-step explanation:
Because corresponding sides of similar triangles are proportional,

You would have to add 9+4+12 to get your answer
Answer:
83°
Step-by-step explanation:
Since angle x and angle y are supplementary angles,
x + y = 180°.
Since y = 97°
x = 180° - y = 180° - 97° = 83°
Answer:
B
Step-by-step explanation:
Since the equation is all positive, the curve should concave towards the 4th quadrant.