Answer:
First, you have to calculate the angles.
3x-2 + 4x +2x -12 + 2x + 3x + 10
14x -4 = 360
14x = 364
x = 26
So, the angles are:
3x -2 = 76
4x = 104
2x -12 = 40
2x = 52
3x + 10 = 88
Step-by-step explanation:
1.80 per lb for 100 lbs = 1.80 * 100 = 180
1/10 * 180 = 180/10 = $ 18 <==
subtraction:
5/8 - 1/8 = 4/8which reduces to 1/2 pound left
<h3>
The error is -6 </h3>
Step-by-step explanation:
If a line passes through the points
and 
Then the equation of line is

Here given points are (-3,-7.5) and (2,-5)
Then the equation of the line is

⇔
⇔2.5(x+3) = 5(y+7.5)
⇔(x+3)= 2(y+7.5)
⇔x+ 3 = 2y +15
⇔2y = x+3-15
⇔y = 
⇔y = 0.5 x -6
The error is -6
The total weight is 2500 grams. 25 x 100 = 2500