3x+4y=11
4y=11-3x
Substituting this into x+4y=9
X+11-3x=9
-2x=9-11
-2x=-3
2x=3
X=3/2
Substituting this into x+4y=9
3/2+4y=9
4y=9-3/2
4y=18/2-3/2
4y=15/2
Y=15/2/4
Y=15/8
X=1 1/2
Y=1 7/8
I mean the first thing I would do would be add 5y to both sides but since that’s not an option then you can subtract 6x from both sides .
<span>1. Given a(t) = 90 - 10 log (t + 2) = 75 or
10*log (t + 2) = 90-75 = 15 or log(t+2) = 1.5 or
(t+2) = 10^(1.5) or t = -2+[10*√10] = 29.622 or 29.6 weeks. hence the option, "a.29.6 weeks" is correct.
</span>
Answer:
-8+3x
Step-by-step explanation:
7 – 9x – 15 + 12x
We cannot solve since there is no equals sign, we can only simplify
Combine like terms
7 -15 -9x+12x
-8 +3x
You have to work backwards for these problems 7-3(x+6)
