If S is students and n is nonstudents
S = 3n + 11
541 = 6(3n + 11) + 7n
541 = 18n + 66 + 7n
475 = 25n
n = 19
19 nonstudents so then you put that number in the first equation
S = 3(19) + 11
S = 68
68 students attended the movie
Answer:
7.5d
Step-by-step explanation:
The n th term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here a₁ = d, thus
= d + 7d = 7 d = 7.5d
Answer:
y+1=2x
Step-by-step explanation:
you should just divide the numbers by 3
Answer:
:D
Step-by-step explanation:
Step-by-step explanation:
Sum of opposite angles are supplementary,
x + 60 + 3x = 180
4x + 60 = 180
4x = 180 - 60
4x = 120
x = 120 / 4
x = 30