Nico wanted to determine the number of students in his
school who buy school lunch. he walked around the
cafeteria one lunch period looking to see whether every
fifth person in the cafeteria purchased lunch or brought
their own.
9
10
which method did he use to collect his data?
survey
simulation
experiment
observational study

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

it is c, trust i got your back lol

step-by-step explanation:

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step-by-step explanation:

you need to rotate this triangle about the origin 270 degrees clockwise to create the full square.