The answer is 133 beats per minute.
To calculate this, we will use proportion.
If 190 beats per minute are 100%, how many beats per minute are 70%:
190 bpm : 100% = x : 70%



Thus, Xanthe's target heart rate is 133 beats per minute.
Answer:
31.4 cm
Step-by-step explanation:

Hence, length of arc = 31.4 cm.
Answer:
For 6: A
For 7: B
Step-by-step explanation:
It requires graphing. For circumcenter, you draw a perpendicular line from each vertex to opposite side of that vertex and the intersection of those lines is the point of circumcenter.