Answer:
Step-by-step explanation:
Since the whole right side of that triangle is equal to 28 and the lower portion is 21, then we know the upper portion is 7. Set up a proportion using those sides and the fact that the 2 triangles are similar:
and cross multiply to get
21x = 126 and
x = 6
1.50x + 6.50y is your algebraic expression.
On the 4th stage, 81 friends will be called to be told of the news
Answer:
23
Step-by-step explanation:
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