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16 solve by the elimination method.?
16 solve by the elimination method.?
0.3x-0.2y=4
0.4x+0.3y=49/23
what is the solution of the system?
3 Antworten
- vor 1 JahrzehntBeste Antwort
Geez, you didn't even take the problem number off your homework. Do it yourself.
Quelle(n): I'm a teacher. Do your own homework. - mcginnesLv 4vor 4 Jahren
3x + 2y = sixteen 5x + 5y = 12 on account that there isn't something to be cancelled, a undeniable value could be dispensed. right here, i will use 5 and -2. 5(3x + 2y = sixteen) -2(5x + 5y = 12) 15x + 10y = 80 -10x - 10y = -24 Cancel 10y and -10y. 15x = 80 -10x = -24 upload. 5x = fifty six (Divide the two components by 5) x = fifty six/5 or 11.2 Getting y: 3(fifty six/5) + 2y = sixteen 168/5 + 2y = sixteen 5(168/5 + 2y = sixteen) 168 + 10y = 80 10y = 80 - 168 10y = -88 (Divide the two components by 10) y = -88/10 or -40 4/5 or -8.8 Checking: 3(fifty six/5) + 2(-40 4/5) = sixteen 168/5 - 88/5 = sixteen 80/5 = sixteen sixteen = sixteen hence, x = fifty six/5, y = -40 4/5 answer Set: (fifty six/5 or 11.2, -40 4/5 or -8.8) desire this facilitates.
