Answer:
a = 4
Step-by-step explanation:
a + 2 = 6
Subtract 2 from both sides
a + 2 - 2 = 6 - 2
a = 4
I think you would divide 7 by 49 whivh would be 7 seconds per page.
Answer:
39
Step-by-step explanation:
if you square 15 and 36 you get
225+1296=1521
1521 square rooted is 39