Class of students - number of students that are boys = numbers of students that are girls
30 - 13 = 17
To change the number of students that are girls into percentage...
17/1 * 1/100 = 17/100
17/100 in a % form = 17%
The percentage of girls in the class is 17%
Answer:
7. (-1, 10)
8. (7,-6)
9. C
10. One solution, Infinitely Many Solutions, No Solution
11. Adult tickets: 52 Student tickets: 68
Moving from a to b, the x component of the desired vector is 7-(-9) = 16, and
the y component is 3-9 = -6.
So the vector from a to b is <16,-6>, and the magnitude is
sqrt(16^2 + (-6)^2 ), applying the Pythagorean Theorem.
Despite having a lower percentage, the one with 12% off manages to have a better price in the long run do the starting price.
45/75 = 30/x
30*75 = 2250/45 = 50
EF = 50 in.
