It is true. Perpendicular lines are what we call to two lines that intersect together forming a right angle or an angle measuring 90 degrees. You can easily determine this if you see a horizontal and a vertical line intersect together.
Answer:
Im sure the answer is 40%
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It would be 28:20
7=5=12
48/12=4
7x4=28
5x4=20
We know that point M is a midpoint of segment RS, and line l passes through segment RS. Since l passes through RS at its midpoint, M, then we can declare that l is the bisector of RS. Your best answer is A since the above is the basic definition of a bisector.
George sold:

and Veronica sold:

As expanding the scientific notation numbers, we see that
George sold eight hundred thousand
Veronica sold 4 million
How many time is 4 million of 8 hundred thousand?
We simply divide!

So,
Veronica's song was downloaded 5 times the numebr of that of George.
B is the right answer.