The temperature at noon is 75 degreesF. The temperature drops 3 degrees every half hour. What is the temperature at 4.pm.
I'm studying Multiplying Rational numbers and I don't know how to set this up.
51
noon to four = 4 hours
4 * 2 = 8
3 * 8 = 24 degrees
75 - 24 = ?
The answer is 51
where did you get the two
51
3 degrees every half hour (so it drops 6 degrees in an hour).
4 hours total
75-(3×2/1×4)=51
To find the temperature at 4 pm, you'll need to determine the number of half-hour intervals from noon to 4 pm and then calculate the corresponding temperature decrease. Let's break it down step-by-step:
1. Determine the number of half-hour intervals from noon to 4 pm:
There are 4 hours between noon and 4 pm. Since there are 2 half-hours in an hour, you multiply 4 by 2 to get the total number of half-hour intervals: 4 hours × 2 half-hours/hour = 8 half-hour intervals.
2. Calculate the temperature decrease:
The temperature drops 3 degrees Fahrenheit every half-hour interval. Multiply the number of intervals (8) by the temperature decrease per interval (3 degrees) to get the total temperature decrease: 8 intervals × 3 degrees/interval = 24 degrees.
3. Calculate the final temperature:
Subtract the total temperature decrease (24 degrees) from the temperature at noon (75 degrees) to find the temperature at 4 pm: 75 degrees - 24 degrees = 51 degrees Fahrenheit.
Therefore, the temperature at 4 pm would be 51 degrees Fahrenheit.