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

When you describe the wind what two factors must be included?

what is the smallest integer that gives rest to : 19 when you divide by 20 20 when you divide by 21 34 when you divide by 35plzzzz

which fossil occurs on the most landmass what does this suggest about when these particular continents broke up

How did the Tang people gain the Mandate of Heaven?

The chemical equation below summarizes cellular respiration. 6O2 + C6H12O6 à 6CO2 + 6H2O + energy The energy that is released by cellular respiration is in the

What caused a shift toward a service-based economy in the 1970s? deindustrialization export increases oil embargo stagflation

How can you use a single parallel sentence to combine the sense in these two sentences? I regularly drudge five days a week. I habitually sleep through the week

Please help and show work

is this sentence "Mrs. Ames is seventy years old, yet she jogs every day." a. coordination b. subordination c. parallelism

A major unit of the genetic code is called a(n) _____.