Find the solution of the system of equations. -10x-y=27 -4x-y=9
2 answers:
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Answer:
x= 8
Step-by-step explanation:
Pythagoras' Theorem states that the square of the hypotenuse side (side opposite the right angle) is the sum of the squares of the other 2 sides.
Applying Pythagoras' Theorem,
x² +6²= 10²
Simplify:
x² +36= 100
x²= 100 -36
x²= 64
Square root both sides:
x= 8
Answer:
12. Please find attached the required plot created with MS Excel
Step-by-step explanation:
12. The points are given in their <em>x </em>and <em>y</em>-coordinates as follows;
(-2, 5), and (5, 2)
To plot the points on a graph, MS Excel plot function can be used as follows;
1) We enter the <em>x </em>and <em>y-</em>values of the first point, side by side in cells on the Excel spreadsheet
We enter the <em>x </em>and <em>y-</em>values of the second point, beneath the first point on the spreadsheet as follows;
2) The four cells are selected and from the Insert menu within the Chart group, the Scatter (x, y) chart is selected
3) The plot created with MS Excel is attached
