Question

In Exercises 15-22, change the number given as a percent to a decimal number. 15. 7% 0.07 18, 0.75% 0.0075 212 135.9% 1.359 17, 5.15% 00515 16.39% 0.39 19, %00025 22, 298.7% 2.987 20. % 0.00375 27.

Answer 1

Explanation:

We are asked to convert given percent to a decimal number.

We know to convert a number to decimal, we divide given percent by 100 as percent means per hundred.

We also know that to divide a number by hundred, we need to move decimal to two digits to left.

(15).
`7\%`

`7\%=(7)/(100)=0.07`

(16).
`39\%`

`39\%=(39)/(100)=0.39`

(17).
`5.15\%`

`5.15\%=(5.15)/(100)=0.0515`

(18).
`0.75\%`

`0.75\%=(0.75)/(100)=0.0075`

(19).
`(1)/(4)\%`

`(1)/(4)\%=((1)/(4))/(100)=(1)/(4*100)=(1)/(400)=0.0025`

(20).
`(3)/(8)\%`

`(3)/(8)\%=((3)/(8))/(100)=(1)/(8*100)=(3)/(800)=0.00375`

(21).
`135.9\%`

`135.9\%=(135.9)/(100)=1.359`

(22).
`298.7\%`

`298.7\%=(298.7)/(100)=2.987`