Find X. I'm having trouble with this one as well.

Step-by-step explanation:

All of the angles in a triangle add up to 180° So make an equation by adding up all the angles and set it equal to 180. (2x-18) + (3x - 12) + 40 = 180

Combine like terms.

5x -18 - 12 + 40 = 180. Add up all the constants (plain numbers with no x)

5x + 10 =180 Subtract 10 from both sides

5x = 170 Divide both sides by 5

x = 34

6,250

step-by-step explanation:

to get the area, multiply 360 by 160.(57,600)

to find out how many bags of fertilizer it will take, first figure out how many square feet one bag can hold. divide 1000 by 8(125) to get the unit rate(how many square feet one pound of fertilizer can hold)and multiply it by 50(6250). if i haven't made a mistake, that is the answer.