Which could be the scale factor of the following similar figures? Two triangles, one with side lengths 9, 9, and 12, the other with side lengths 6, 6, and 8, are shown.

A. two-thirds
B. three-fourths
C. 1
D. three-halves
E. four-thirds

you can select multiple answers

1. what are the missing reasons in the proof 2. it's in the second picture and 3

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?

For the given quadratic equation convert into vertex form, find the vertex and find the value for x=6 y=-2x^2+2x+2