You need to solve this "system of linear equations." In other words, find a point (x,y) that satisfies both 4x-3y=17 and 2x-5y=-11.
Try solution by elimination. Multiply the 2nd equation by -2 to obtain -4x+5y=22. Add this result to the 1st equation. I'd suggest you write this out to see what is happening.
4x-3y=17
-4x+10y=22
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7y=39. Solving for y, we get y=39/7 (a rather awkward fraction).
Now find x. To do this, substitute 39/7 for y in either of the given equations. Solve the resulting equation for x.
Write your solution in the form (x, y): ( ? , 39/7).
Answer:
Step-by-step explanation:
Weight from before + Weight gained
Convert to improper fractions.
Find the common denominator.
Add.
Convert to a mixed fraction.
Answer:
Based on these results, express the probability that the next customer will pay with cash as a fraction in simplest form : -> 3/70 <-
Step-by-step explanation:
(Trust me)
<h2><em>hope</em><em> it</em><em> helps</em><em>!</em></h2>
