HELP! Elle was asked to find the missing measure of an interior angle of a heptagon. A heptagon has angles x, 116 degrees, 115 degrees, 155 degrees, 138 degrees, 95 degrees, and 150 degrees.

Elle’s work is shown below.

Steps
Elle’s Work
Step 1
(n minus 2) 180 degrees = (7 minus 2) 180 degrees = 900 degrees
Step 2
900 minus (116 + 115 + 155 + 138 + 150)
Step 3
x = 226 degrees

Where, if at all, did Elle first make a mistake finding the measure of an interior angle?
step 1
step 2
step 3
Elle did not make a mistake.

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

image for option 4

step-by-step explanation:

i just know the internet

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.

c

step-by-step explanation: