Read two-way relative frequency tables.
approximately what percent of graduates in the sample had an income under $20,000?

1 / 4= 25%

Step-by-step explanation:

The percent of graduates in the sample had an income under $20,000

= Posibility of had an income under $20,000 / total posible outcomes

= 75 / 300

= 1 / 4= 25%

Hope this helped :3

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

30 people weigh 160 pounds or more