Is 9/10 irrational

Is -15/7 irrational

Neither are irrational

Step-by-step explanation:

As per its definition, an irrational number is a number that cannot be expressed as a fraction. Both of the given numbers are in fractional form, therefore, neither of them are irrational.

10 cm

step-by-step explanation:

if the polygon is a rectangle, then the perimeter is x+x+y+y. using the values that you gave, the perimeter is 3+3+2+2=10cm.

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared