Answer:
a and c I think if I'm wrong I will try again
Answer:
Jill's best friend jumped 8/21 feet further than Jill.
Step-by-step explanation:
we have that
Jill jumped 6 1/3 feet
Jill best friend jumped 6 5/7 feet
To find out how much farther did Jill's best friend jumped, subtract the length that Jill jumped from the length that Jill best friend jumped

but first convert mixed number to improper fraction


substitute the values

therefore
Jill's best friend jumped 8/21 feet further than Jill.
The answer is B. Btw don’t click on the link provided by the other answer provider it’s a virus.
Answer:
C. 55
Step-by-step explanation:
Since all angles in a triangle add up to 180°, we have:
40 + y + y + 30 = 180
2y + 70 = 180
2y = 110
y = 55