How do i find the value of x

if you go on khan academy its free it can explain better then me.

Step-by-step explanation:

the measure of angle A for the inside of the triangle is 180-12x+4.

Since the total angle measurement inside the triangle must be 180 degrees

180-12x+4+10x-10+30=180 is the equation we would use to find X so to solve that 174+30-2x=180, 204-2x=180, -2x=-24 x=12

answer

the correct answer is

explanation

the given function is

the excluded values are obtained by solving:

we factor to obtain:

the excluded values are

24

step-by-step explanation:

the graph shows 30% of students walk. 80 students were questioned, so the number that said they walk is

30% × 80 = 0.30 × 80 = 24