9x-1 If 3x = 7, what is the value of ? 10

20

Step-by-step explanation:

Step 1:

3x = 7       Equation

Step 2:

x = 7 ÷ 3    Divide

Step 3:

x = 2 1/3

Step 4:

9 ( 2 1/3 ) - 1         Input x

Step 5:

( 9/1 × 7/3 ) - 1      Multiply

Step 6:

21 - 1      Multiply

20

Hope This Helps :)

step-by-step explanation:

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies