Answer:
15 men and 10 women attended
Step-by-step explanation:
Answer:
35,829,630 melodies
Step-by-step explanation:
There are 12 half-steps in an octave and therefore arrangements of 7 notes if there were no stipulations.
Using complimentary counting, subtract the inadmissible arrangements from to get the number of admissible arrangements.
can be any note, giving us 12 options. Whatever note we choose, must match it, yielding . For the remaining two white key notes, and , we have 11 options for each (they can be anything but the note we chose for the black keys).
There are three possible arrangements of white key groups and black key groups that are inadmissible:
White key notes can be different, so a distinct arrangement of them will be considered a distinct melody. With 11 notes to choose from per white key, the number of ways to inadmissibly arrange the white keys is .
Therefore, the number of admissible arrangements is:
Answer:
your mom
Step-by-step explanation:
sheeesh
The median would be: 7.9
and the mean would be:7.4714285714 (you are able to chop that down a bit if needed)
We have to use the law of cosines to solve for the missing angle.
cos(?) = (400^2 + 450^2 - 90^2) / (2*400*450).
Since, we want the exact value, we are going to take the inverse cosine of both sides
? = 10 degrees
The astronomer had to rotate her telescope 10 degrees to see star B