Answer:
Consecutive odd integers are 19 , 21 & 23
Step-by-step explanation:
Let the first 3 consecutive odd intergers be x , (x + 2) and (x + 4).
According to the question,
Eliminating 2x from both the sides,
So, the consecutive odd integers are = 19 , 21 & 23.
Answer:
where is the number of laptops, and
is the year.
in 2017:
Step-by-step explanation:
I will define the variable as the number of years that passed since 2007.
Since the school buys 20 lapts each year, after a number of years, the school will have
more laptops.
and thus, since the school starts with 31 laptops, the equation to model this situation is
where is the number of laptops.
since x is the number of years that have passed since 2007, it can be represented like this:
where can be any year, so the equation to model the situation using the year:
and this way we can find the number of laptos at the end of 2017:
and
Answer:
.
Step-by-step explanation:
Fact:
.
In other words, , the difference of two squares in the form
and
, could be factorized into
.
In this question, the expression is the difference between two terms:
and
.
Hence:
.
Apply the fact that to factorize this expression. (In this case,
whereas
.)
.
