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

Someone help me PLEASE ! What is the measure of the indicated central angle? A) 10 degrees B) 20 degrees C) 30 degrees D) 40 degrees E) None of the above

The radius of a circle is 1 mile. What is the circle's diameter

Which of the two cities, located at the same latitude, would have the hotter summer: the one situated on the coast or the one situated farther inland?

15newtons is used to push a box along the floor a distance of 3 meters. How much work was done

How does a name define you as a person?

According to the Rational Root Theorem, which function has the same set of potential rational roots as the function g(x) = 3x^5 – 2x^4 + 9x^3 – x^2 + 12?

Based on the description and the map Brad used, Brad concluded that Africa divided into regions based on _______________. A) economic systems B) political syst

Which is the most accurate statement? Engineers create questions, and scientists try to answer them. Scientists design new tools when engineers are unable

The set of points (4, 3), (7, 3), (4, 0), and (7, 0) identifies the vertices of a quadrilateral. Which is the most specific description to tell which figure the

Estimate 2 3/5 - 1 3/8