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Setler79 [48]
4 years ago
13

Learning about system of equations, please give a VERY DETAILED explanation! I'm having a lot of trouble with this. :(

Mathematics
1 answer:
katen-ka-za [31]4 years ago
4 0
H=150m
P=190x
5=m+x
P=H+270
P stands for Polish
H stands for Hungarian
M stands for the time she can speak in H
X stands for the time she can speak in P
Plug in H and P

190x=150m+270
5=m+x
Solve for X
-m both sides
X=-m+5
Plug in x
190 (-m+5)=150m+270
Distribute
-190m+950=150m+270
+190m both sides
950=340m+270
-270 both sides
680=340m
÷340 both sides
M=2
5=x+2
-2 both sides
X=3

She spoke 2 minutes in Hungarian and 3 minutes on Polish
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Step-by-step explanation:

I think you made a reading error on this question, as it said "for which equation is s = 9 <em>not</em> the solution?" No need to fret though, this can easily be solved by substituting 9 into the variable <em>s</em> of each equation.

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