A 2.0 kg mass attached to an ideal spring oscillates horizontally with an amplitude of 0.15 m. The spring N
• constant is 85
m
What is the period of the mass's motion?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels

Evaluate this using ! 0.25^2 x 2.4 + 0.25 x 2.4^2 − 0.25 x 2.4 x 0.65