Answer:
what ummmmmm
Step-by-step explanation:
4
Answer:
x +2y = 12
Step-by-step explanation:
Try the given points in the given equations and see what works.
-2x + 5y at (2, 5) is -2(2) +5(5) = 21 ≠ 12
) +) 2x + y at (2, 5) = 2(2) +(5) = 9 ≠ 12
x + 2y at (2, 5) = 2 +2(5) = 12 . . . . . goes through first point
x + 2y at (4, 4) = 4 + 2(4) = 12 . . . . goes through second point
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You know the answer at this point, so the next check is just for "completeness." It is not necessary to properly answer the question.
-x +2y at (2, 5) = -(2) +2(5) = 8 . . . . goes through first point
-x +2y at (4, 4) = -(4) + 4(4) = 4 ≠ 8 . . . does not go through second point
Answer:
70
Step-by-step explanation:
The angle not marked in the top triangle is 40 degrees since it is an isosceles triangle. That makes the angle opposite it in the other triangle 40 degrees since they are vertical angles and vertical angles are equal.
The bottom triangle has 3 angles that sum to 180 degrees, The other angle not marked is also y since it is an isosceles triangle.
40 + y +y = 180
Subtract 40 from each side and combine like terms
40-40 +2y = 180-40
2y = 140
Divide by 2
2y/2 = 140/2
y = 70
(1,115),(3,205)
slope = (205 - 115) / (3 - 1) = 90/2 = 45
the plumber charges $ 45 for each hr worked