After a year of babysitting for $9.75 Kira decides to stop babysitting and takes a new job delivering items. The new job will pay her $7.80. What is the percent decrease? .25%

25%

.2%

20%

The percent decrease is 20%

Step-by-step explanation:

This write this as a percent proportion

So it would be:

7.80/x = 9.75/100

x=780/9.75

x=80

Since we have to find the percent decrease, we do 100%-80% and we get 20%

Let me know if you have any questions.

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

180-142=38 for the acute angle next to the entry

90+38=128

180-128=52

a=52

step-by-step explanation: