Answer:60
Step-by-step explanation:
Pythagorean's theorem gives us 100^2-80^2=b^2
Simplifying this we get:
10000-6400=b^2
3600=b^2
b=60
Answer:
The answer is $12.50
Step-by-step explanation:
If you divide 25 and 2 you get 12.5
Its its moneywise half of one dollar is 50 cents.
So the answer is $12.50
<h3>
Answer: 39</h3>
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Explanation:
You can use the nCr formula shown below

where n = 39 and r = 1. However, you could also use the identity

which basically says there are n ways to pick 1 item if you are given a choice of n items. In this specific case, we have 39 items total, and there are 39 ways to pick one item.
Answer:
they left a $1.24 tip
Step-by-step explanation:
5x+3=3x+7
<em></em>-3 = -3
2x+3=7
-3= -3
2x=4
x=2