Write an expression that has a value of 18 using at least 3 different operations.

The expression  (2 x 3) + 13  - 1   on simplifying gives 18.

Step-by-step explanation:

Here, the outcome of the expression is 18.

Using at least three operations.

Here, we use three operations Addition = '+' , Subtraction =  '-' and

Multiplication  = 'X'

Take the number 2 and multiply it with other number 3.

We get 2 x 3  = 6

Take the product, add it with another number  13

So, 6+ 13=  19

Take the resultant and subtract 1 from it.

We get 19 - 1 = 18

⇒The combined expression is (2 x 3) + 13  - 1  = 18

The above expression on simplifying gives 18.

the system of inequity is

step-by-step explanation:

from the given graph it is noticed that we have two related lines. one is solid and another is dashed.

if a line passing through two points, then the equation of line is

the solid line passing through the points (0,4) and (4,0).

the related equation of solid line is .

similarly, find the related equation of dashed line. the dashed liune passing through the points (0,0) and (3,1).

the related equation of dashed line is

from the given graph it is noticed that the point (0,1) lies on the shaded region, therefore the point (0,1) must be satisfied by the related equations.

check the related equations by the point (0,1).

this statement is true if the sign of inequality is < instead of equality. since it is an solid line therefore the sign of inequality will be . the required inequality is

similarly, check the second related equation.

it is a dashed line, so this statement is true if the sign of inequality is > . the required inequality is

you can't solve x because it is 2 linear equation and you only have one equation