What is variability
write answer in own words

Heyo,

Variability is when you find the range of how spread put some numbers can be in this case were lokking at data and statistics.

If my answer is acceptable feel free to leave a thank you and 5 stars have a great day!

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

$15 each

step-by-step explanation:

$45/3 children= $15 each