What is the value of the expression (x+y) + 5 if x = 6 and y =4

15

Step-by-step explanation:

the expression is (x+y)+5

Now, you need to plug in x=6 and y=4.

So, you have the expression, (6+4)+5

You then add the 6 and 4 since they are in parenthesis, which equals 10. Then you add the 5, which equals 15.

13

step-by-step explanation:

169-1=168

168-3=165

165-5=160

160-7=153

153-9=144

144-11=133

133-13=120

120-15=105

105-17=88

88-19=69

69-21=48

48-23=25

25-25=0

since it took 13times to completely subtract it hence its square root is 13

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.