Answer:
you did not provide the numbers to answer any question...
but the formula that you want is probably this one
Combination Formula nCr=n!(n−r)!r!
Step-by-step explanation:
13
since the inside of a triangle is equal to 180
180-42-73=65
65/5=13 so 13 should be the answer.
m=15d-300
the answer is in the image above
