Q:

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.

Accepted Solution

A:
Step-by-step 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). [tex]7\%[/tex][tex]7\%=\frac{7}{100}=0.07[/tex](16). [tex]39\%[/tex] [tex]39\%=\frac{39}{100}=0.39[/tex] (17). [tex]5.15\%[/tex] [tex]5.15\%=\frac{5.15}{100}=0.0515[/tex] (18). [tex]0.75\%[/tex] [tex]0.75\%=\frac{0.75}{100}=0.0075[/tex] (19). [tex]\frac{1}{4}\%[/tex] [tex]\frac{1}{4}\%=\frac{\frac{1}{4}}{100}=\frac{1}{4*100}=\frac{1}{400}=0.0025[/tex] (20). [tex]\frac{3}{8}\%[/tex] [tex]\frac{3}{8}\%=\frac{\frac{3}{8}}{100}=\frac{1}{8*100}=\frac{3}{800}=0.00375[/tex] (21). [tex]135.9\%[/tex] [tex]135.9\%=\frac{135.9}{100}=1.359[/tex](22). [tex]298.7\%[/tex] [tex]298.7\%=\frac{298.7}{100}=2.987[/tex]