Mrs. Tart takes a survey in class. She discovers 60% of her students prefer using pens over pencils in class. If 12 students in Mrs. Tart’s class prefer to use pens, how many total students are in Mrs. Tart’s class?

20 students

Step-by-step explanation:

If,

60% = 12 students

∴ 1% = 12\60 students

∴ 100% = (12*100)\60 students

            = 20 students

{ easiest way for me}

definition: a circle is the  set of all points in a plane that are equidistant  from a given  point  called the center of the circle. we use the symbol ⊙ to represent a circle. the a line segment from the center of the circle to  any point  on the circle is a radius of the circle.

step-by-step explanation:

i googled it and this is what i got i don't know how it is. sorry.

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2