A weather forecaster predicts that the temperature in Antarctica will decrease 8^{circ}F each hour for the next 6 hours. Write and solve an inequality to determine how many hours it will take for the temperature to drop at least 36^{circ}F

Dottie Parra

Dottie Parra

Answered question

2021-01-06

A weather forecaster predicts that the temperature in Antarctica will decrease 8F each hour for the next 6 hours. Write and solve an inequality to determine how many hours it will take for the temperature to drop at least 36F

Answer & Explanation

SkladanH

SkladanH

Skilled2021-01-07Added 80 answers

Given information:
Since, the temperature in Antarctica decreases by 8F each hour for every 6 hours, using h as the number of hours it will take to drop at least 36F, then we can use the inequality 8h36:
Calculation:
Given,
8h36
Divide both sides of the inequality by 8
8h8368
h4.5
Hence, the minimum hours it will take at least 4.5 hours before the temperature drops to 36F.
Jeffrey Jordon

Jeffrey Jordon

Expert2021-10-06Added 2605 answers

Given:
m = -8 degrees/hour, the rate of change of temperature

Let x =  hours 
Let y = temperature, F
Then y = -8x + b
where b = constant

When x = 0, then y = b.
Therefore b = initial temperature

If the temperature drops by at least 36 F in the next x hours, then
by(6)36
b(8x+b)36
8x36
x4.5 hours

Answer:  At least 4.5 hours

Mr Solver

Mr Solver

Skilled2023-06-11Added 147 answers

Answer:
x4.5
Explanation:
According to the given information, the temperature decreases 8 degrees Fahrenheit each hour for the next 6 hours. Therefore, the total temperature decrease can be calculated as 8x.
We want the temperature to drop at least 36 degrees Fahrenheit, so we can write the following inequality:
8x36
To solve for x, we divide both sides of the inequality by 8:
8x8368
Simplifying further, we have:
x4.5
Therefore, it will take at least 4.5 hours for the temperature to drop at least 36 degrees Fahrenheit in Antarctica.
Eliza Beth13

Eliza Beth13

Skilled2023-06-11Added 130 answers

We know that the temperature decreases 8 degrees Fahrenheit each hour for the next 6 hours. Therefore, the total temperature decrease after h hours can be expressed as 8h.
To determine how many hours it will take for the temperature to drop at least 36 degrees Fahrenheit, we can set up the following inequality:
8h36
Simplifying the inequality, we have:
h368
Simplifying further, we find:
h4.5
Since h represents the number of hours, it cannot be a fraction. Therefore, we round up the solution to the nearest whole number, giving us:
h5
Thus, it will take at least 5 hours for the temperature in Antarctica to drop by at least 36 degrees Fahrenheit.
Nick Camelot

Nick Camelot

Skilled2023-06-11Added 164 answers

Step 1:
To solve the given problem, let's assume the initial temperature in Antarctica is denoted by T0 (in degrees Fahrenheit) and the number of hours is denoted by h. According to the weather forecaster's prediction, the temperature will decrease by 8 degrees Fahrenheit each hour. Therefore, we can represent the temperature at any given hour h as T(h).
Since we are interested in determining how many hours it will take for the temperature to drop at least 36 degrees Fahrenheit, we need to find the value of h that satisfies this condition.
The inequality can be expressed as:
T08hT036
Simplifying the inequality, we get:
8h36
To solve for h, we need to isolate it on one side of the inequality. To do this, we can multiply both sides of the inequality by 1 and reverse the inequality sign:
8h36
Step 2:
Finally, dividing both sides of the inequality by 8, we find:
h368
Therefore, the temperature will drop at least 36 degrees Fahrenheit in h hours, where h is greater than or equal to 368.
The solution can be written as:
h368

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