<h3>
Answer: 0.8554</h3>
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Explanation:
A 6% decrease means the multiplier is 1-0.06 = 0.94
A 9% decrease means the multiplier is 1-0.09 = 0.91
Multiply those results: 0.94*0.91 = 0.8554
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Extra Info:
The final price is 85.54% of the original price after the two discounts are applied (in any order). This represents a total discount of 100% - 85.54% = 14.46%
There are 63 students in the room, this is because 21 time 3 gives you 63.
Consider such events:
A - slip with number 3 is chosen;
B - the sum of numbers is 4.
You have to count 
Use formula for conditional probability:
1. The event 
consists in selecting two slips, first is 3 and second should be 1, because the sum is 4. The number of favorable outcomes is exactly 1 and the number of all possible outcomes is 5·4=20 (you have 5 ways to select 1st slip and 4 ways to select 2nd slip). Then the probability of event is
2. The event 
consists in selecting two slips with the sum 4. The number of favorable outcomes is exactly 2 (1st slip 3 and 2nd slip 1 or 1st slip 1 and 2nd slip 3) and the number of all possible outcomes is 5·4=20 (you have 5 ways to select 1st slip and 4 ways to select 2nd slip). Then the probability of event is
3. Then
Answer: 
<span><span><span>−5</span>+s</span>><span>−1
</span></span>Step 1: Simplify both sides of the inequality.
<span><span>s−5</span>><span>−1
</span></span>Step 2: Add 5 to both sides.
<span><span><span>s−5</span>+5</span>><span><span>−1</span>+5
</span></span><span>s>4
</span>Answer:<span>s><span>4
hope this helps!</span></span>
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