ella3714

16.04.2021 • 

Mathematics

Complete the two-way frequency table below, which shows the relationship between students who participate in band and drama in a particular high school. From a sample of 80 students, it is found that 19 are in band, 11 are in drama, and 9 participate in both. Band Not in Band Total
Drama 9 11
Not in Drama
Total 19 80
Part A: How many students are not in band or drama? Explain your answer using complete sentences. (1 point)

Part B: How many students in this sample are in drama but not in band? Explain your answer using complete sentences. (1 point)

Part C: If there are 500 students in the entire school, how many students can the band instructor expect to participate in the first band practice of the year? Show your work or explain your answer using complete sentences. (2 points) (4 points)

Ответ:

24swimdylanoh

03.05.2021

Mathematics

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We have been given a graph which describes temperature of pizza ( in degree Celsius) as a function of time (in minutes).

We can see that time is independent variable and temperature is dependent variable as it depends on time.  

Let us find when temperature of pizza will reach 0 degree Celsius. We can find the time when temperature will be 0 degrees by finding when y is zero.  

We can see that initial temperature of pizza is about -6 degree Celsius. As time is increasing temperature of pizza is also getting less negative and it is approaching to zero.        

At t= 0.75 minutes our function h(t) equals zero. Therefore, it will take 0.75 minutes the pizza to reach 0 degree Celsius.

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