Answer:

Step-by-step explanation:
We want to write the trignometric expression: 

As an algebraic equation. 
First, we can focus on the inner expression. Let θ equal the expression: 

Take the secant of both sides: 

Since secant is the ratio of the hypotenuse side to the adjacent side, this means that the opposite side is: 

By substitutition: 

Using an double-angle identity: 

We know that the opposite side is √(u² -100), the adjacent side is 10, and the hypotenuse is u. Therefore: 

Simplify. Therefore: 

 
        
             
        
        
        
Answer:
9.93 liter approximately 10 liter
Step-by-step explanation:
3 days = 3/2 quart
3 week = 3/2/3 × 21 quarts
 = 1/2×21
 =21/2 quarts
now
1 quart = 0.946 liter
21/2 quart = 0.946×21/2 liter
21/2 quart = 9.93 liter
 
        
             
        
        
        
Three would be your answer :)
        
                    
             
        
        
        
Multiply both sides by 2.3, ( tan 6° x 2.3 = f ) 
 Regroup terms, 2.3 tan 6 = f.
F = 2.3 tan 6° 
So the answer is tan 6 = tan 6 I think
        
             
        
        
        
The probability the next customer pays using a debit card based on the last three weeks is 30% or 0.3.
<h3>What is a probability?</h3>
This is the chance or likelood for an event to occur. For example, if in a city it has snowed every year on December 25th, there is a high probability it will snow this year and in the next years.
<h3>How to calcuate the probability?</h3>
Total of a specific outcome/ total of outcomes
Based on this, let's calculate the probability the next customer pays using the debit card:
- Total that pay with debit card: 21 customers
- Total of customers: 70 customers
- 21/ 70 =0.3 or 30%
Learn more about probability in: brainly.com/question/11234923
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