Need which expression represents the phrase, "half the sum of 10 and a number"? a) 1/2(10)+x b) 1/2(10+x) c) 1/2+10+x d) 1/2x+10

Let

x--------> the number

we know that

1) "the sum of and a number"

the expression that represent the phrase is

2) "half the sum of and a number"

so

the expression that represent the complete phrase is

therefore

the answer is the option

b) 1/2(10+x)

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.