20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 % 20 35 M 70
2. Select all the statements that are true about standard deviation.
a.
It is a measure of center.
b. It is a measure of variability.
c.
It is the same as the MAD.
d. It is calculated using the mean.
e.
It is calculated using the median.
1

Solve the system of equations y= 3/2 - 1, -x+ y =-3

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem

Use a standard normal table to determine the probability. give your answer as a decimal to four decimal places. −1.5< < 1.5)