The sum of two numbers is 25. And their difference is 7. Find the numbers

The numbers are 9 and 16.

Step-by-step explanation:

It is possible to solve this problem without using algebra and all the  equations. well one number is 7 more than the other, but they add to 25. If you subtract the difference of 7 first, you will be left with the sum of two equal numbers.

25-7=18

18/2=9   The one number is 9 and the other is 7 more than 9, so you would do  (9+7 = 16)

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