1 - 2x < 11
-2x < 10
x < -5
Jack's mistake is that he was supposed to divide by -2 on both sides of the inequality, but he did not do that. By dividing by -2, he will get x < -5.
The vertex of f(x)=-x2+4x-8 is (2, -4)
Answer:
mean=sum of data/no of data
=12/3
=4
Step-by-step explanation:
therefore mean=4
Step-by-step explanation:
180° = m<A + m<B + m<C
180° = 45° +60° + m<C
180° = 105° + m<C
m<C = 180° - 105 °
m<C = 75°
