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3 years ago

I need the answer written

Mathematics

2 answers:

PilotLPTM [1.2K]3 years ago

8 0

Answer:

x = 180 - (31 + 40)

Step-by-step explanation:

Note that the angle of a straight line has a measurement of 180°

31 + x + 40 = 180°

Isolate the variable x. Note the equal sign, what you do to one side, you do to the other. Subtract 31 and 40 from both sides.

x + (40 + 31) (- (40 + 31)) = 180 (- (40 + 31))

x = 180 - (40 + 31)

padilas [110]3 years ago

5 0

Answer:

x = 180 - (31 + 40)

Step-by-step explanation:

x = 180 - (31 + 40)

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Evgen [1.6K]

Let's solve this by using the quadratic formula:

$\frac{-b+-\sqrt{b^2-4ac} }{2a}$

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And so by evaluating those values we obtain:

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Now we have two answers which are our factors one where we add another where we subtract and so:

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