The 2 equations are
18.20x+19.50y=230.10
and
x+y=12
where x is the months of original cost and y is months for new cost. Since you know that you paid for one year (12 months) you can make the second equation. Then you want to substitute the first equations x by making the second equation
x=(12-y)
18.20(12-y)+19.50y=230.10
218.40-18.20y+19.50y=230.10
1.30y=11.70
y=9
so that means you had the original rate for 3 months and the new one for 9 months
Answer:
x=i or no solution exists depending on the user's grade
Step-by-step explanation:
f(x) = 2x^2-5
-7 = 2x^2-5
-2 = 2x^2, x^2=-1, x=i
Answer:
S1548.
Step-by-step explanation:
1-7% =- 0.017 and 5.3% - 0.053.
Kevin : After 1 year he has 43,000 * 0.017 = S731.
Greg: After 1 year he has 43,000 * 0.053 = S2279
Difference = 2279 - 731 = S1548.
Answer:
40/100=4/10=2/5 2/5 is the simplest form
