<h2>(1, 4)</h2><h2 />
To solve this system by addition, notice that if we add these two equations together, neither one of our variables will cancel out.
In this situation, we need to set things up so that when we do add our two equations together, one of the variables will cancel out.
Notice that we have a 10x in our second equation. if we had a -10x in our first equation, then the x's would cancel out.
To create a -10x, we can multiply the top equation by -2 to get a -10x.
From there, rewriting our equation gives us -10x - 2y = -18.
Now the x's cancel. Just add the equations together
now to get the two-step equation -9y = -36.
Solving from here, <em>y = 4</em>.
Now plug y into either one of the equations
to find that x =1.
So our solution is (1,4).
Answer:
-72
Step-by-step explanation:
Answer:
The are 8 dimes and 12 nickels
Step-by-step explanation:
1.We set n+d=20 because 20 is the total number of dimes and nickels in the jar.We have $0.05 n because for ever nickel,we earn $0.05.Adding this to the value of dimes,represented similarly by $0.1,then we set this to the amount of money we have in total,which is $1.40.
2.Subtract d from both sides of the first equation to get it by itself.Substitute-d for n in the second equation.The divide both sides by 0.5 to obtain the answer.
3.Substitute 8 in for d to obtain the value or n.
Answer:
x=16 y=25 z=14.2
Step-by-step explanation:
Answer=28 players
If there are 4 players at every 1 table then...
1 table would have 4 players
4=4
2 tables would have 8 players
4+4=8
3 tables would have 12 players
4+4+4=12
4 tables would have 16 players
4+4+4+4=16
5 tables would have 20 players
4+4+4+4+4=20
6 tables would have 24 players
4+4+4+4+4+4=24
7 tables would have 28 players
4+4+4+4+4+4+4=28
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You can also solver this problem by multiplying the number of tables, 7, by the number of player per table, 4.
7*4=28players
