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:
-x - 3y + z
Step-by-step explanation:
Think of a imaginary 1(-1 because of the sign) in front of the parenthesis and distribute it to the other number and so x will become -x, 3y will become -3y and -z will become z because two negatives make a positive.
Answer:
C. One-fourth mile over thirty-six seconds = 25 miles per hour.
We have been given that an elephant can run one over four of a mile in 36 seconds.
To find elephant's rate in miles per hour, we will convert our given time in hours as shown below:
Therefore, option C is the correct choice.
Step-by-step explanation:
Nope anyway marry Christmas