Algebra applications
2 answers:
Answer:
Step-by-step explanation:
<u><em>Finding x:</em></u>
4x - 100 + x + 5 = 180 <em>(Angles on a straight line)</em>
5x - 95 = 180
5x = 180 + 95
5x = 275
<em>Dividing both sides by 5</em>
x = 55
<em><u>Finding y:</u></em>
2y + 3y +30 = 180 <em>(Angles on a straight line)</em>
5y = 180-30
5y = 150
<em>Dividing both sides by 5</em>
y = 30
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Answer:
option C
Step-by-step explanation:
Total number of items = 5
Number of items to choose = 2
Therefore, the number of combinations is