Answer:
The other person had the best answer for your question but I think it might be c=9
11in
Step-by-step explanation:
a^2+b^2=c^2 when c is the hypotenuse
10^2+sqrt21^2=c^2
100+21=c^2
121=c^2
11=c
the answer is 60country songs
18
B. 1/9 cuz it's just saying y is 1/9 of x
Please refer to the attachment
