Answer:
(a) 10×8
(b) 31×9
Step-by-step explanation:
We have given that
(a) 81 - 1
We have to write this in form of product of two integers
We know the algebraic equation 
As 81 -1 can be written as 
So 
(b) We have given 400 - 121
We have to write this in form of product of two integers
We know the algebraic equation 
As 81 -1 can be written as 
So 
what does the ^ mean.
i will answer in the comments
Answer:
1:30 pm
Step-by-step explanation:
1/4 of an hour is 1/4 of 60 minutes, or 15 minutes
15 minutes past 1:15 would be 1:30 pm
The formula for the surface area of a sphere is

Answer:
first option, -7 < x < 6
Step-by-step explanation:
add one to all sides