Which property is used in the equation below? 12(x+4)= 12x+48

True or false? a circle could be circumscribed about the quadrilateral below.

Labc is reflected across x = 1 and y = -3. what are the coordinates of the reflection image of a after both reflections?

Arandom sample of n = 25 observations is taken from a n(µ, σ ) population. a 95% confidence interval for µ was calculated to be (42.16, 57.84). the researcher feels that this interval is too wide. you want to reduce the interval to a width at most 12 units. a) for a confidence level of 95%, calculate the smallest sample size needed. b) for a sample size fixed at n = 25, calculate the largest confidence level 100(1 − α)% needed.