Jojo823 Jojo823

03-11-2017
Mathematics

contestada

find CDE, if BAC=50 and BCA Is a right angle.
a) 40
b) 50
c) 90
d) 180

find CDE if BAC50 and BCA Is a right angle a 40 b 50 c 90 d 180 class=

Respuesta :

mathstudent55 mathstudent55

03-11-2017

Because of the two sets of parallel lines, two pairs of corresponding angles are congruent, and the triangles are similar.

Since m<BAC = 50, then m<DCE = 50.

mBCA = 90, and m<DEC = 90

m<DCE + m<DEC + m<CDE = 180

50 + 90 + m<CDE = 180

m<CDE = 40

Answer Link

Otras preguntas

Who developed the classification system that contained five levels and two kingdoms?

On the day a video was posted online, 5 people watched the video. The next day, the number of viewers have doubled. This trend continues each day. Write an equa

A boy carries a 50 N box up a flight of stairs 10-m high. How much potential energy has the box gained?

A 78 gram sample of Uranium loses half of its mass each year. What is the exponential equation?

What equation can be used to solve x?

Describe how metaphysics operates in a religion?

Malicious-intentionally harmful, spiteful. Have you ever said anything malicious? What did you say?

what is the main job of each branch of national government

What’s the length of side AB in ABC shown? A. 6 B. 5 C. Square root 15 D. Square root 313

Point A is at (-6,5) and point M is at (-1.5, -1). Point M is the midpoint of point A and point B. What are the coordinates of point B?