(n -12)(n +3)= 0
n = 12, n = -3
Answer:
There are an average of 265 students present.
Step-by-step explanation:
- Count all the present student numbers together: 260 + 270 + 280 + 250 = 1060
- Divide the sum of all the present student numbers by the number of days: 1060÷4=265 students present on average.
Answer:
y = a(x - h)2+ k,
Step-by-step explanation:
(11 + 25 + 27 + 25 + 25 + x) / 6 = 23
(113 + x) / 6 = 23
113 + x = 23 * 6
113 + x = 138
x = 138 - 113
x = 25 <== he needs a 25
64 is the answer hope that helps!
