Why can the value of the variable a in the expression a + 2 be any number? Why does the variable b in the equation b + 2 = 5 have only one value?

Please help Without any links or without deleting the answer<3

(a) Because the expression is not an equation

(b) Because the expression is an equation

Step-by-step explanation:

Solving (a): a + 2

The above expression can assume any value for a because it is not an equation.

Take for instance:

a = 2;

The reason for this is because the expression is not an equation

Solving (b):

The above expression can assume only value for b, and the value is:

This means that only will make the equation true.

The reason for this is because the expression is an equation

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi

18.8cm hope i at all

step-by-step explanation: