A CD usually sells for $11.00. If the CD is 10% off, and sales tax is 6%, what is the total price of the CD, including tax?
1 answer:
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Answer:
The area of the circle is approximately <u>154</u> square meters
Step-by-step explanation:
Area of a circle formula:
given:
- diameter = 14m
- pi = 22/7
9514 1404 393
Answer:
the lines are perpendicular
Step-by-step explanation:
You can tell something by looking at the differences of coordinates:
B-A = (6-2, -11-5) = (4, -16) . . . . . Δy/Δx = -16/4 = -4
D-C = (-1-3, 9-10) = (-4, -1) . . . . . Δy/Δx = -1/-4 = 1/4
The product of the slopes of these lines is (-4)(1/4) = -1, so ...
the lines are perpendicular
