(PLEASE HELP ME WITH THIS 31 PONITS) 1.What is the percent of increase from 8 to 13?
2.What is the percent of decrease from 49 to 35?
3.In your first year as the soccer team's goalie, 25 goals were scored against you. In your second year, only 15 goals were scored against you. What was the percent of decrease?
4.If a number goes from 18 to 20, is that a percent increase or a percent decrease?
5.If a number goes from 50 to 30, is that a percent increase or a percent decrease?

6.87

Step-by-step explanation:

x = central angle apc = measure of minor arc ac

the two angles x and 30 add to 180, so x+30 = 180 and x = 180-30 = 150. the measure of minor arc ac is 150 degrees.

what we need to do from here is find the circumference and then multiply it by x/360 since there are 360 degrees in a circle. in this case, x = 150, so x/360 = 150/360 = 15/36 = 5/12. the shortest distance along the curve from a to c is 5/12 of the distance around the entire circle (aka circumference)

c = circumference

c = pi*d

c = pi*24

c = 24pi

now multiply this by 5/12 to get

distance along minor arc ac = (5/12)*(circumference)

distance along minor arc ac = (5/12)*(24pi)

distance along minor arc ac = 10pi

the formula you can use is

l = (x/360)*pi*d

with

l = length of minor arc

x = central angle

d = diameter

which essentially is the steps we took though a bit differently.

the answer is true.

step-by-step explanation: