Erin and Ethan add the fractions 2 and 1 z. Look at their work below.
How are the
pictures for the two
answers alike?
Erin 25+1
2 / 2
212-23 131
+
Ethan
2}+1
234-21 16- = 1
10
12
Both Erin's and Ethan's answers are correct. Use
pictures to explain why this is true.

They are both the exact same, just one is simplified, and the other is still not simplified all the way. These two answers are exactly the same.

Step-by-step explanation:

b. 2

step-by-step explanation:

the slope of a line =δy/δx

δy= y₂-y₁

δx= x₂-x₁

therefore, using the points (-2,-3)   and (3,7) we can calculate gradient as follows:

m=(7--3)/(3--2) (a number minus a negative number the sign changes to a plus)

m=(7+10)/(3+2)

=10/5

=2

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