How many solutions does this system of equations have?

a; exactly one.

b; exactly two.

c; infinitely many.

d; none.

Infinitely many solutions

Step-by-step explanation:

make one equations to solve for y

2x + y= 1

-2x        -2x

y= -2x+1

plug this in to the other equation

4x + 2 ( -2x +1 )= 2

4x + -4x +2 = 2

4x + -4x cancels out

2= 2

this means there is infinitely many solutions

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