Answer
Step-by-step explanation:
since the left side is 31 the right side would be 31 too so multiply 31x31
19x3.4 i think
Answer:
is it 82 degrees?
Step-by-step explanation:
Answer:
12
Step-by-step explanation:
6 + 7n = 90
n = number of book reports
6 + 7n = 90
7n = 84
n = 12
12 book reports
Answer:
ab=1/12
Step-by-step explanation:
1/(4ab)+1/(3ab)-1/(2ab)=12
1/(ab)*[1/4+1/3-1/2]=1/12
1/(12ab)=1/12
ab=1