Please solve

1) 4x-5/5=3
2) 3(2x-5) =7
3) 3x+2/2=13

9.72 × 10²

Step-by-step explanation:

A number written in standard form is of the form

a × ( where 1 ≤ a < 10 and n is an integer )

We require to write the number between 1 and 10 , that is

9.72 ×

To get the number back to its true value we require to multiply by 100, then

972 = 9.72 × 100 = 9.72 × 10² ← in standard form