Melanie made a circular necklace. She puts beads evenly spaced around the necklace. If the fourth bead is directly across from the 11th bead, how many beads are on the necklace?

14.3

step-by-step explanation:

add all the numbers together.

9 + 12 + 15 + 16 + 17 + 17 = 86

now, divide 86 by how many numbers we have: 6.

86 / 6 = 14.3

just keep asking questions until you have a better understanding.

step-by-step explanation:

the answer is d

step-by-step explanation:

you can also use mathway to get you answer + steps

the figure is a concave pentagon.

step-by-step explanation:

in mathematical context, a pentagon is a flat, two-dimensional closed shape (polygon) with 5 straight sides and 5 angles.

now a pentagon is said to be concave if one or more corners bend inwards and at least one of its angles is 180 degrees or more than 180 degrees.

in the given figure, we can see that we have a corner which is bending inwards and an angle which is clearly greater than 180°. therefore, it is a concave pentagon.