holacoma holacoma

04-03-2021
Mathematics

contestada

In circle O, chords AC and BD intersect at E. If MCD= 120 and MAB=100, what is BEC?

In circle O chords AC and BD intersect at E If MCD 120 and MAB100 what is BEC class=

Respuesta :

mhanifa mhanifa

04-03-2021

Answer:

D. 70°

Step-by-step explanation:

∠BEC is supplementary with ∠BEA

Find the measure of ∠BEA

m∠BEA = 1/2(mCD + mAB)
m∠BEA = 1/2(120° + 100°) = 110°

Supplementary angles sum to 180°

m∠BEC + m∠BEA = 180°
m∠BEC = 180° - 110° = 70°

Correct choice is D

Answer Link

Otras preguntas

What is the most important that wilson outlines in his speech." is?

Help help I don't get this

I have 3 red jawbreakers 2 green 5 orange jawbreakers and 1 purple jaw breaker which color of jawbreaker can be represented as a unit fraction of the bag of jaw

who would have been in charge of making all freedom people in the empire citizens?

i need ideas for a research paper

What is the best way to achieve a long-term goal? Identify the opportunity cost in each of the following examples. Select the answer that best completes the s

How many 3 letter are possible from A E I O and U

HELP ME PLEASE!!!!!!!!!

What is the equation of the graph below? A graph shows a parabola that opens up and crosses the x axis at negative two and negative four.

If a stock car model is built to the scale of 1 cm : 2.5 ft and the model measures 7.7 cm in length, what will be the length of the actual stock car?