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

Why did the colonial army invade Canada? a. to prevent a British invasion from the north b. to recapture lost land and territory from the French and Indian War

What happens to the graph of a positive slope line as you move from left to right?

The plasma membrane is made up of: A. A double layer of cellulose B. A single layer of cellulose C. A double layer of protein D. A double layer of phospholipids

Which term describes the example below?A child with no freckles has a mother who has freckles and is heterozygous and a father who has no freckles and is homozy

What are these fractions in simplest form? ( when I do a / it means a "fraction bar" or " over" like 16/30 or 16 over 30, just incase any of you get confused)

Why does a compass needle point North?

Why was self sufficiency important to a country practicing mercantilism?

Before scientists learned how to make artificial fertilizers, what key process limited the amount of nitrates available to plants in most ecosystems?

Which is most likely to happen to a population that becomes anatomically isolated from the rest of its species? a. The entire species will become extinct. b. Th

Can you identify the 4th most abundant element in the universe?