Assuming the wire starts at x=0, the first point is (0,-4) since using y = 3x - 4 :
3(0) - 4 = -4
the two points are (0,4) and (-3,4)
since the y values are the same, the distance is the positive difference between the x values:
-3 - 0 = -3
then,
the distance is 3 meters
each meter costs $125, so multiply the cost by the amount of meters to find the total:
125 x 3 = 375
the total cost is $375
Answer:
Step-by-step explanation:
Rationalise the denominator by multiplying the numerator & denominator of the fraction with .
Now, we an see that the denominator is in the form of the algebraic identity: (x + y) (x - y) = x² - y². So,
The new denominator is 2.
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