s492847 s492847

01-10-2020
Mathematics

contestada

BD bisects ∠ABC, m∠ABD=(7x−1)°, and m∠DBC=(4x+8)°. Find m∠ABD.

Respuesta :

sqdancefan sqdancefan

01-10-2020

Answer:

m∠ABD = 20°

Step-by-step explanation:

The bisector makes angles ABD and BDC congruent, so ...

7x -1 = 4x +8

3x = 9 . . . . . . add 1-4x to both sides

x = 3

m∠ABD = (7x-1)° = (7·3 -1)°

m∠ABD = 20°

Answer Link

Otras preguntas

Angie can peel 1 6 of a crate of potatoes every 1 18 of a hour. Compute the unit rate by setting up a complex fraction and simplifying.

Positioning like materials in separate vertical groupings defines A. framing. B. shadowing. C. sequencing. D. parallelism.

The term "doughboy" referred to American,French, English troops during World War I.

What is the name of the sentence that makes a demand?

Make up a word problem for y = 50+4x

The Danube River forms a border between Serbia and_____.

When was the first gasoline-powered American automobile made?

The first and most important step in the posting procedure is A. posting the amount. B. posting the date. C. posting the explanation. D. recording the posting r

Who, other than Native Americans, first encountered what is now called North America, and when?

You would expect to code a service for an amniocentesis using a code from the Female Genital System subsection and a code from the ____ section