Answer:
5π or 15.71 inches
Step-by-step explanation:
Length of an arc = 
× 2πr
Where x is the angle and r is the radius
so 
× 2 × π × 10
0.25 × 2 × π × 10
Arc length = 5π inches (answer in terms of π)
= 15.71 inches (answer in two decimal places)
Expression B cannot be simplified because it has no like terms
X = width
2x - 3 = length
2w + 2l = perimeter
2(x) + 2(2x - 3) = 210
2x + 4x - 6 = 210
6x - 6 = 210
6x = 216
x = 36
2(36) - 3 = y
72 - 3 = y
69 = y
width = 36 cm
length = 69 cm
M=(y2-y1)/(x2-x1)= (3-1)/(4-3) =(2/1)= 2
y=mx+b. plug in one of the points for the second line and solve for b
1=2(3)+b
1=6+b
-5=b
plug b and m back into the equation y=mx+b
y=2x+-5
The solution to the system must make sense when plugged into both equations
C works because
y=x+3; 11=8+3
11=11 and
y=2x-5; 11=2(8)-5
11=11
Linear lines, i’m pretty sure
