kim2001 kim2001

15-05-2017
Mathematics

contestada

If m∠4 = (3x)° and m∠8 = (x + 40)°, what is the measure of ∠4?
∠4 and ∠8 are vertical.

A.
20˚
B.
60˚
C.
40˚
D.
120˚

Respuesta :

lizzyvet1 lizzyvet1

15-05-2017

vertical angles are opposite angles and therefore equal
3x = x + 40
-x -x
2x = 40
--- -----
2 2
x = 20

A is your answer

Answer Link

Otras preguntas

The pie chart shows that electricity production emits the most greenhouse gases in the United States. According to the Environmental Protection Agency (EPA), ab

A marine biologist is concerned about clown fish in a section of the coral reef. Which step of the inquiry process will she perform to begin an investigation of

Which best describes the exocrine glands? 1. Exocrine glands function only for digestion and temperature regulation. 2. Exocrine glands can sometimes release su

A hydrogen-powered car creates no pollution when the car is driven; however, using this alternative fuel poses many challenges. Which of the following choices i

Need help as soon as possible

The map below shows the invasion of Italy in 1943: Which describes a result of the military action shown in the map? Mussolini was forced to resign. Allied

If there is a strong negative linear relationship between the variables, the value of _____ will be close to -1. A.) negative correlation B.) positive correlat

The first term of a geometric sequence is –2 and the common ratio is -1/-4. What are the next three terms of the sequence?

The function g(x)=8x^2-48x+65 written in vertex form is g(x)=8(x-3)^2-7. What is the vertex of g(x)

N Africa and Southwest Asia countries like Great Britain, France and Germany were competing for