Find the area of this figure (sides meet at right angles)
1 answer:
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Rearranging the first equation gives:
Substituting this into the other equation gives:
If x=-1:
So x=-1, y=-5
Substituting this into the other equation gives:
If x=-1:
So x=-1, y=-5
Mark and Don have to sell 11 and 59 marbles respectively.
<em><u>Explanation</u></em>
Lets assume, the number of marbles Mark has is
As, Don has 4 more than 5 times the number of marbles mark has, so the number of marbles Don has
Question says that the total number of marbles is 70. So, the equation will be...
<em>So, the number of marbles Mark has = 11 </em>
<em>and the number of marbles Don has = </em>