the answer is 4 because 16 and 20 can both be divided by 4.
All you have to do is add those two numbers given and subtract by 180. all of the angles shall add up to 180 if not then you dic something wrong
#4(a)
row-seat: 3- 13, 4-15, 5-17, 6-19, 7-21
(b)
the equation works for row 1 but not for any of the rows after this
Ex: Row 2, S=7(2)+2, this would equal 14 but there isn't 14 seats in row #2
(c)
S=2(1)+7, there is 9 seats in row 1
2(2)+7=11, there is 11 seats in row 2
2(3)+7= 13, there is 13 seats in row 3
(d)
2(15)+7=37
2*15=30, 30+7=37
(e)
91=2(r)+7
91-7=2(r)+7-7
84=2(r)
84/2=2(r)/2
42=r, the row with 91 seats is row 42
Actually I can help you in three of them as the number "3" is not confined between the arrays ND and NE
So:
It would be
angle END
or
angle DNE
or
angle N
Answer:
Step-by-step explanation:
Any number equal to or greater than 20 is a solution. 22 would be a solution.
