Question

A pair of vertical angles have measures (3x+4)° and (7x−9)° . What is the value of x? A:−5/4 B:13/4 ​ C:19/2 ​ ​ D:37/2 ​

Answer 1

13/4

Explanation:

Answer 2

Option B
`((13)/(4))\°`

Explanation:

we know that

Vertical Angles are the congruent angles opposite each other when two lines cross

so

In this problem

`(3x+4)\°=(7x-9)\°`

solve for x

`7x-3x=4+9`

`4x=13`

`x=((13)/(4))\°`