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agasfer [191]
3 years ago
13

NEED HELP ASAP PLEASE HELP

Mathematics
2 answers:
BigorU [14]3 years ago
6 0
If im not mistaken, the answer should be B
ikadub [295]3 years ago
5 0
Angles on a straight line add up to 180°
This means we can say that:

(5x + 20) + (4x +25) = 180

Now we have an equation that we can solve:

(5x + 20) + (4x +25) = 180
9x + 45 = 180    <em>(we collected the terms : 4x + 5x = 9x, and 20 + 25 = 45)</em>
9x = 135  <em>(we subtracted both sides by 45, to get the x values alone on one side)
</em>x = 15    <em>(we divided both sides by 9, to get what just x is)
</em><em>-------------------------------------------------------------------------------------------------------------

</em>Now that we know the value of x, we can substitute it into the equations given in the diagram:

5x + 20 = 5 * 15 + 20
              = 95°

4x + 25 = 4 * 15 + 25
              = 85°
-------------------------------------------------------------------------------------------------------------

Answer:

So the measure of the two angles are:
A)  95
° and 85

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