ashramirez013 ashramirez013

16-03-2021
Mathematics

contestada

In the accompanying diagram, PA is tangent to the circle at A and PC is a secant. If
PA = 8 and PB = 4, then BC =

In the accompanying diagram PA is tangent to the circle at A and PC is a secant If PA 8 and PB 4 then BC class=

Respuesta :

akposevictor akposevictor

21-03-2021

Answer:

c. 12

Step-by-step explanation:

PA² = (BC + PB) × PB => tangent-secant theorem

PA = 8

PB = 4

BC = ?

Substitute

8² = (BC + 4) × 4

64 = 4BC + 16

64 - 16 = 4BC + 16 - 16

48 = 4BC

48/4 = 4BC/4

12 = BC

BC = 12

Answer Link

Otras preguntas

Which best explains the inability for life in earths early atmosphere? Check all that apply

which observation proves that a cell is a eukaroyotic ?

A pendulum clock with a brass suspension system is calibrated so that its period is 1 s at 20 degree C. If the temperature increases to 43 degree C, by how much

An understanding of how stress affects our resistance to disease is the central focus of the field of

What is the value of y in this figure?

Todd has just been hired at a health clinic in the city where he will be exposed to patients with different ethnicites. Which of the following should Todd do to

Find an equation for the line that passes through the points (-4, -1) and (6, 3)

Which of the following ideological types favor government activism in the economic realm? a. liberals and populists b. populists and libertarians c. conservativ

What causes high diastolic blood pressure

Financial Markets and Institutions. True or false? (LO2-1) a) Financing for public corporations must flow through financial markets. b) Financing for private co