Bunny3200 Bunny3200

13-10-2017
Mathematics

contestada

D is the midpoint of AC. If AD = 2x + 6 and DC = 4x-7, what is the length of DC?

A. 6.5
B. 7
C. 18
D. 19

Respuesta :

texaschic101 texaschic101

13-10-2017

A----------D----------C

AD = 2x + 6
DC = 4x - 7

the midpoint D splits AC into 2 equal parts....therefore, AD = DC

2x + 6 = 4x - 7
2x - 4x = -7 - 6
-2x = - 13
x = -13/-2
x = 6.5

DC = 4x - 7......4(6.5) - 7 = 19 <===
AD = 2x + 6.....2(6.5) + 6 = 19

Answer Link

Otras preguntas

1. During a religious revival is a culture more religious or less religious? More religious Less religious

4m − –3m − 17m − –m − –7m = 12

Most project files will contain: A. Over 18,000 different programs in 19 different languages B. Other Project files C. A single program, called Program D.Robot

should animals be used as test subjects explain in a paragraph

Need help on 15,17 and 18 :)

A. Make an organized list to represent the sample space of tossing a coin and picking a number between 1 and 5, inclusive. [Hint: Inclusive means that 1 and 5 m

2. What were three results of the Crusades? Christianity in Europe

Joe has $60 in a savings account. Each week he deposits $12 in the account. Which expression is equivalent to the total amount in the account after x weeks?

Easy math Can someone please help me

What did President Washington accomplish through his response to the Whiskey Rebellion?