4.438 rounded to the nearest tenth is 4.4
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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Hope this helps! let me know if you have any questions
Step-by-step explanation:
-30
multiply you'll get a negative number
For equation
y = ax² +bx +c
the line of symmetry is given by
x = -b/(2a)
Filling in the given values, we have
-2 = -(-4)/(2a)
a = 4/(2(-2)) = -1
The value of "a" is -1.
