teehartinegr teehartinegr

26-01-2020
Mathematics

contestada

15. Find m∠DEC (the picture is not drawn to scale).

15 Find mDEC the picture is not drawn to scale class=

Respuesta :

profarouk profarouk

26-01-2020

Answer:

m∠DEC = 123°

Step-by-step explanation:

First we need to solve for x the equation: x = (x - 45) + (x-12)

x = (x - 45) + (x-12) ⇔ x = 2x -57 ⇔ 0 = x - 57 ⇔ x = 57

since m∠DEC = 180 - x then m∠DEC = 180 - 57 = 123

Answer Link

Otras preguntas

What is the value of b?

Which of the following is a difficulty associated with environmental protection? a. cost b. unpredictability c. sustainability d. all of the above

A group of environmentalists were discussing the benefits and drawbacks associated with using fossil fuels. Which argument best fits the conversation?

What is 2.66 as a fraction?

why where the loyalists important?

how might a variation in speed among individuals of a shark species affect the population of that species

Which of the following would have the greatest impact on the survival of a population of zebras in Africa? a. appearance of tourists b. climate change c. dust s

how many atoms are in Na2SO3 how many atoms are in K2CO3 how many atoms are in Hg2CL2

Write a sentence with the word hypocritical

which event served as a catalyst in the fight against apartheid in south Africa?