Hi!
We can see the river is a straight line.
This means that the angles that fall upon it are supplementary angles, and will add up to 180 degrees.
Therefore:

Combine like terms:

Subtract 21 from both sides:

Divide both sides by 3:

Therefore, the value of x is 53 degrees.
7 the awnser is 7 ok(kkkkk
Answer:
y = 4x + 5
Step-by-step explanation:
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Answer:
2x(8x-7)
Step-by-step explanation: