An internet company conducts a global consumer survey to multinational companies understand different consumer attitudes throughout the world. within 30 countries, the researchers interview 1000 people aged 13-65. their sample are designed so that they get 500 makes and 500 females in each country.
a.) are they using simple random sample?
b.) what kind of design do you think they are using?

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

1,589.63 in.^3

step-by-step explanation:

i hope this you : d

3.how is solving radical equations different than solving linear equations?

step-by-step explanation:

1/8 3/16 3/4

step-by-step explanation:

you put them as all the same denominator and multiply