Geometry, Unit 2, Lesson 6) Triangles ACD and BCD are isosceles. Angle DBC has a measure of 84 degrees and angle
BDA has a measure of 24 degrees. Find the measure of angle BAC.
ADAC and BDBC
A
D
+
B
C
Type the answer in the box below.
Angle BAC has a measure of
degrees

On the first of each month, shelly runs a 5k race. she keeps track of her times to track her progress. her time in minutes is recorded in the table: jan 40.55 july 35.38 feb 41.51 aug 37.48 mar 42.01 sept 40.87 apr 38.76 oct 48.32 may 36.32 nov 41.59 june 34.28 dec 42.71 determine the difference between the mean of the data, including the outlier and excluding the outlier. round to the hundredths place. 39.98 39.22 0.76 1.21

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

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.