If two lines intersect at a right angle, then they are perpendicular
1 answer:
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Answer:
See explanation below.
Step-by-step explanation:
Let's say, represents the sale price of radio.
Then the marked price of the radio is
The cost price of the radio is
The discount is simply 25% because the radio is being sold at 25% less then the marked price.
The gain percent is given as:
The radio is being sold at 12.5% gain.
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Answer:
Nowe we can find the means for x and y like this:
And we can find the intercept using this:
So the line would be given by:
Step-by-step explanation:
Σx = 77, Σy = 587, Σx2 = 1593, Σy2 = 70,533, and Σxy = 10040.
Where:
With these we can find the sums:
And the slope would be:
Nowe we can find the means for x and y like this:
And we can find the intercept using this:
So the line would be given by: