Agroup of tissues in which small blood vessels from the mother and offspring intertwine but do not connect is the:

Solution:

nervous system, digestive system, and umbilical cord. A group of tissues in which small blood vessels from the mother and offspring intertwine but do not connect.

This is the required answer.

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15