Show that the given set is an infinite set by placing it in a one-to-one correspondence with a proper subset of itself. (use n as your variable.) b (11, 15, 19, 23, 27, 31,, 4n+7,. ) let f (15, 19, 23, 27, then f is (4n +7) ( because b can be placed in a one-to-one correspondence with a proper subset of itself, b is an infinite set. 5. show that the given set has a cardinality of ko by establishing a one-to-one the elements of the given set and the elements c 1,1 4

details

step-by-step explanation:

x = 2

step-by-step explanation:

if sr parallel to ba then the sides bc and ac are in proportion, that is

= ← substitute values

= ( cross- multiply )

27x = 6(4x + 1)

27x = 24x + 6 ( subtract 24x from both sides )

3x = 6 ( divide both sides by 3 )

x = 2

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