The three steps below were used to find the value of the expression [(-10 + 2) - 1] + (2 + 3).

Step 1: ?

Step 2: -9 + 2 + 3

Step 3: -7 + 3

Which expression is missing from Step 1?

a. [-10 + 1] + (2 + 3)

b. [8 + 1] + (2 + 3)

c. [-8 - 1] + (2 + 3)

d. [-10 + -1 + 2] + (2 + 3)

C. [-8-1] + (2+3)

Step-by-step explanation:

When solving [(-10+2)-1] + (2+3)

We follow PEMDAS and solve from left to right.

Since (-10+2) is the first parentheses, we solve and get -8

so it turns [(-10+2)-1] + (2+3) into

(-8-1) + (2+3)

get rid of 2+3's parenthese and solve for -8-1

-9 + 2 + 3

and then continue following steps shown in the question above.

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

b

step-by-step explanation: