First you must remember that: An isosceles triangle consists of a vertex angle and 2 CONGRUENT base angles.
subtract 180-24
156/2
=78
CHECK:
25+78+78=180
9.6 is less than the square root of 96. The square root of 96 is roughly 9.8
X-15+9-4=x-10 there are ten fewer people after the second stop than the original amount
Start by seeing where the lines go. They cross (intersect) at (1, -1). We can use this to check later.
Now for slope: green is -4/2 = -2
pink is 4/2 = 2
Now we can create the equations
Let's make green = g(x) and pink = p(x)
if we use y = mx + b, then the green has a y-intercept (b) of +1
So g(x) = -2x + 1
pink has a y-intercept of -3, so p(x) = 2x - 3
Now let's plug n play: put our solutions x into each equation and confirm that it makes the y = -1
g(x) = -2x + 1 = -2(1) + 1 = -2+1 = -1
p(x) = 2x - 3 = 2(1) - 3 = 2-3 = -1
✔ YES THEY ARE CONFIRMED
Problem: 2/3= 18/(x+5)
First, I would multiply the (x+5) over
Making it 2/3(x+5)=18
Second, I would Divide by 2/3 (which is the same as multiplying by the reciprocal 3/2)
which shows up like this now (x+5)=18*3/2
third I would subtract the 5 over
which will give you your answer
