A teacher is interested in students’ opinions about an upcoming school dance. Which of the following techniques uses systematic random sampling? A) Survey the first 10 students who arrive.
B) Survey every 10th classroom as the teacher walks down the hallway.
C) Survey the 10th student arriving at school (with the number 10 being randomly chosen), then survey every 12th student after that.
D) Survey the 10th student arriving at school (with the number 10 being randomly chosen), then survey every other boy and every other girl after that.

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation:

pretty sure 750 each month!

step-by-step explanation:

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.