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steposvetlana [31]
3 years ago
5

Solve the following system of equations using the elimination method 5x - y = 10 x + 3y = 4​

Mathematics
1 answer:
Naddik [55]3 years ago
7 0

Answer:

5x - y = 10x + 3y = 4

5x - y = 4..... 1

10x + 3y = 4.....2

multiply by -2 in eq 1 in both sides

-10x + 2y = -8

10x +3y = 4

eliminate one variable by adding the equations

5y = -4

y = - 4/5

sub the value of y in..1

5x - y = 4

5x + 4/5 = 4

5x = 16/5

divide by 5 on both sides

x = 16/25

(x ; y)

(16/25 ; -4/5)

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From the diagram attached below; we can see a graphical representation showing the mid-segment of the trapezoid JKLM. The mid-segment is located at the line parallel to the sides of the trapezoid. However; these mid-segments are X and Y found on the line JK and LM respectively from the graph.

Using the expression for midpoints between two points to determine the exact length of the mid-segment ; we have:

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\mathbf{ YX = \sqrt{9*5} }

\mathbf{ YX = 3 \sqrt{5} }

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3 years ago
4h+8=20 what is h?..........
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Hoped this helped! :)
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