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

Question

asked Dec 11, 2018 146k views

2 Answers

Barneytron · Answer 1 · 2018-12-16T20:18:56+0000

Answer:

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

$x=((13)/(4))\°$