The perimeter of a rectangle is the sum of all four sides. Which expressions will find the perimeter of a rectangle with a length of 4 and a width of a? 4 + a + 4 + a

4 + 2a

8 + 2a

8 + a

6/20

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

answer would be 8.64 or s = 11π/4 inches

step-by-step explanation:

s = r θ  

where s = arc length  

r = radius = 3 inches  

θ = central angle in radians = ( π /180)*165  

s = 3(π/180)*165  

= 8.64 inches