Since the 6 is bigger than 5 it means round up if it was a 4 you would round down
soo... 26
5x+2y = 20
For every hardcover book (x) you will be charged 5$.
For every paperback book (y) you will be charged 2$.
The amount of both types of books you buy has to be under or equal to 20$
Answer:
25
Step-by-step explanation:
you just multiple 5 times 5
Answer:
(5 + 3i)(5 − 3i) = 34
Step-by-step explanation:
The multiplication of two identical binomials who have different symbol, can be solved using the factoring case of a difference of squares:

So, in this case:


Remember that 
So: 
We replace on the polynomial:

Answer:
Step-by-step explanation:
A delivery of 4 boxes will contain 2 more defective lightbulbs than a delivery of 2 boxes.