Match the name of the sampling method descriptions given. Situations writing everyones name on a playing card, shuffling the deck, then choosing the top 20 cards dividing by population by voting precinct, and sampling everyone in the precints selected dividing the population by Gender, and choosing 30 people of each gender choosing every 5th person on a list ask all the students in your math class Sampling Method Cluster Systematic Convenience Stratified Simple Random

a = 3.14

b = 18

c = 18/5 or 3.6 or 3 3/5

step-by-step explanation:

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.