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

the answer to this problem

What are factors of production? all the human efforts involved in the production process all the resources used to produce any goods and services all the physic

What are on the surface of most vertebrate cells, acting as markers of self?

The seven-step model used primarily for making career decisions focuses heavily on research. True False

Beethoven composed his Overture to Egmont during the _____ wars. Napoleonic French Revolutionary Crimean Franco-Prussian

PLS HELP! :/ Marisol is in a bathtub that is shaped like a rectangular prism, about 5 ft long, 2 ft wide, and 1 ft deep. She is drinking hot cocoa that is in a

Which prefix changes the meaning of bacterial from "relating to or caused by bacteria" to "preventing bacteria"? a.over- b.anti- c.auto- d.extra-

How did the Treaty of Hopewell affect the Cherokee, Chickasaw, and Choctaw? A. It established the dominion of the US government over their lands. B. It prevente

a sculpture that combines found objects to make a new object is an example of what type of art? assemblage lithography street art drop shadows

The gift of the magi what kind of irony is used in this story