drey10
20.08.2020 •
Mathematics
A precalculus course has 32 class meetings that last 1.75 hours each. How many minutes does the course meet in a semester. Express your answer in scientific notation.
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Ответ:
Step-by-step explanation:
If one pre calculus class lasts 1.75hours
32 class meetings will last 32*1.75 = 56 hours
Hence the number of hours that the precalculus meets in the semester is 56 hours. In order to know the number of minutes the same class meet, we will convert 56 hours to minutes.
Since 1 hour = 60 minutes
56hours = (56*60) minutes
56hours = 3360 minutes
Expressing 3360 in scientific notation means expressing it in exponential form.
3360 = 3.36 * 10³ minutes
Hence the precalculus class meets for 3.36 * 10³ minutes in a semester.
Ответ:
See below.
Step-by-step explanation:
A. k = 50 * 3.6 = 180.
B. The equation is y = 180/x.
C. When x = 75, y = 180/75
= 2.4.
D. Checking C: 2.4 = 180/75 = 2.4. Correct