Answer:
It will take nine years and four months for the refrigerator to pay for itself.
Step-by-step explanation:
The new refrigerator which costs $1200, saves the family 22% annually in energy cost.
Since the old refrigerator costs $580 to run, we want to determine how many years it will take for 22% of $580 per year to make $1200.
22% of $580
= 580 × 0.22
= 127.6
That is, it saved then $127.6 per year.
Now,
$1200/127.6
≈ 9.4
Which means, it will take 9 years and 4 months for the refrigerator to pay for itself.
Answer:
1/8 :)
Step-by-step explanation:
1/8 is correct because 12.5*8=100
Rearranging the first equation gives:
Substituting this into the other equation gives:
If x=-1:
So
x=-1, y=-5
Answer:
Thanks, but here is a problem I'll give myself.
Problem X+2 > 3
Step-by-step explanation:
1. Take Away 2 from both sides.
2. Answer: X > 1
Answer:
Step-by-step explanation:
When 
, we have 
.
Combining like terms on the right side, we have 
.
Finally, dividing by 
we get 
.
We note that 
and 
, so 
.
So, 
and we're done!
