jetblackcap
jetblackcap
23-04-2018
Mathematics
contestada
HELP IS MUCH NEEDED :)
Respuesta :
Аноним
Аноним
23-04-2018
∠ADC = 112°
∠ADC =6x + 7 + 12x - 3
Equate both:
6x + 7 + 12x - 3 = 112
Solve for x :
6x + 7 + 12x - 3 = 112
Combine like terms:
18x + 4= 112
Take away 4 from both sides:
18x = 108
Divide both sides by 18:
x = 6
Find ∠ADB:
6x + 7 = 6(6) + 7 = 43
Answer: ∠ADB = 43°
Answer Link
Supernova
Supernova
23-04-2018
If m∠ABC = 112°, then m∠ADB + m∠BDC must equal 112°.
Make
m∠ADB + m∠BDC = 112.
6x + 7 + 12x - 3 = 112
18x + 4 = 112
18x = 108
x = 6
Now plug x into 6x + 7 to find m∠ADB.
6(6) + 7 = 43
m∠ADB = 43°
Answer Link
VER TODAS LAS RESPUESTAS ( 98+ )
Otras preguntas
What factor of light has proven to be the most critical to floral development? Length of uninterrupted light periods Length of uninterrupted dark periods Lig
Which type of sampling method is being employed in the following example? A study is being conducted of all schools in Gwinnett County. One student's parents f
Rewrite the following differences of squares as a product of two integers. (a). 81 − 1 (b). 400 − 121
What was the impact of Muslim rule on Europe?
The length of a rectangle is 3cm more than twice it’s width. Find the largest possible length if the perimeter is at most 66cm
Part B Write whether each verb is active or passive. 6. Cameron often photographs people in parks. 7. The mural was painted by several artists. 8. The covered b
Will the opposite of a positive number always sometimes or never be a positive number
Samuel, Beatrice, and Kadeem all work at the same car manufacturing company. Samuel is responsible for placing the windows on the doors, Beatrice is responsible
Convert the equation f(t)=190(1.33)^t to the form f(t)=ae^kt a= k= Give values accurate to three decimal places
Using the diagram what would be the movement on an object between both vectors? 10 N -10 N The object would move to the left. The object would move to the right