the 2 equations are vertical angles, which mean they are equal to each other.
Set them to equal and solve for X:
x+40 = 3x
Subtract 1x from each side:
40 = 2X
Divide both sides by 2:
X = 40/2
X = 20
Answer:
a = 155 degrees
Step-by-step explanation:
A straight line is equal to 180 degrees.
25 + a = 180
Subtract 25 from both sides.
a = 155
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To simplify we can collect like terms so we get -1.7f-18 :)
Answer:
yes,it is written in scientific notation.