Chelsea was going to sell all of her stamp collection to buy a video game. after selling half of them she changed her mind. she then bought seven more how many did she start with if she has now 24? solve in two steps.

Chelsea initially had 34 stamps.

Step-by-step explanation:

Let Chelsea initially had x stamps.

Now, she sold half of this amount.

Thus, number of stamps left =

Now, it has been given that she bought seven more stamps.

Hence, now she have stamps.

Also, it has been given that she has now 24 marbles.

Thus, we have the equation

Solve this equation for x

Therefore, Chelsea initially had 34 stamps.

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.