Original: 30$
new: 18

explain if it’s increase or descrease

The basic logic says:  "What percent of 25 is 18?"

18 = (x/100)25

x = 1800/25

x = 72%

18 is 72% of 25

This is a decrease of 28% from the original number

0r a change of -28%

Follow the same logic with a change from 36 to 45

45 = (x/100)36

When you solve for x it will be greater than 100.

Subtract the original 100% from it to get the

POSITIVE change in percentage.

answer: check all that apply, where the options?

step-by-step explanation:

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet