The sum of two numbers is 12. The first number, x, is twice the second number, y. Which system of equations could be used to find the two numbers? A system of equations. x plus y equals 12. x equals 2 plus y.
A system of equations. x plus y equals 12. x equals 2 y.
A system of equations. x y equals 12. x equals 2 plus y.
A system of equations. x y equals 12. x equals 2 y.

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

This is about circle theorems. someone asap : (