Answer: B. (3,9)
Step-by-step explanation:
7x -5y = -24(times by -1)
–9x + 5y = 18
-2x=-6
X= 3
(Substitute 3 in)
-9(3)+5y=18
-27+5y=18
5y=45
Y=9
Answer:
A
14+28i
1423/33
Let x = 43.121212.........
Two digits are repeating after decimal point. So multiply both sides by 100
100x = 4312.1212 --------------(I)
<u> x = 43.1212 </u> -----------(II) { subtract equation (II) form (I)}
99x = 4269
x= 4269/99 {reduce to simplest form by giving by 3rd table}
x = 1423/33
3 hours
it is $100 for 1 hour right. Ok so forget about the hourly rates. Then you are left with $300. $300 total÷100 per hour = 3 hours.
