1. biased sample2. convenience sample 3. unbiased sample 4. self-selected sample 5. stratified sample 6. systematic sample a. members are selected from the different subgroups within a population. b. sample where representatives are easily accessible. c. sample where every member of the population has an equal chance of being selected. d. sample members are selected through the use of a rule. e. sample not representative of the entire population. f. sample where members volunteer to take part.

c

step-by-step explanation:

i think because what else can be a sample of every member

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

step-by-step explanation:

two pairs of adjacent sides are of equal length. this implies that one diagonal divides the kite into congruent triangles, and so the angles between the two pairs of equal sides are equal in measure. it also implies that the diagonals are perpendicular.