Round off 17.2 to one significant figure

round off 17.2 to one significant figure is 17.

Step-by-step explanation:

Given : 17.2 number

To find : round off 17.2 to one significant figure.

Solution : We have given

Number 17.2

We can see from the given number , after decimal number is less than 5 so, we will not consider it.

If the number after decimal is greater than 5 then it increase the previous number by 1

Example: 17.5 it becomes 18.

Therefore, round off 17.2 to one significant figure is 17.

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x