Asocial scientist conducts a study with 10 subjects. in which situations is a permutation necessary to determine the number of possible outcomes ?
select all that apply
a) schedule interviews for all 10 subjects
b) invite 3 subjects to participate in a repeat study
c) select 3 out of 6 sandwiches and 2 out of 4 desserts for the subjects lunches
d) create a seating chart for 10 subjects around a table
e) administer a survey to 6 of the subjects

13875138answer:

step-by-step explanation:

use a calculator!

; )

step-by-step explanation: ; )

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1

< coa = 150 ( given)

as ba and bc are tangents

so oc and oa is perpendicular to cb and ab respectively because in circle normal passes through centre

so in quadrilateral oabc

< coa + < oab + < ocb + < abc = 360

150 +90+90 + < abc = 360

330 + < abc = 360

< abc = 360 -330 = 30

so < abc = 30

⭐dhruv⭐