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Tanya [424]
3 years ago
6

The heat in the house is set to keep the minimum and maximum temperatures (in degrees Fahrenheit) according to the equation |x –

72.5| = 4. What are the minimum and maximum temperatures in the house?72.5°F and 76.5°F68.5°F and 76.5°F70.5°F and 74.5°F72.5°F and 74.5°F
Mathematics
2 answers:
olga2289 [7]3 years ago
7 0

Given the equation |x-72.5|=4.

When x is maximum, we have

|x-72.5|= x-72.5. Hence x-72.5 =4\\x=76.5

The maximum temperature is 76.5\; ^oF

When x is minimum, we have

|x-72.5|=72.5-x. Hence 72.5-x =4\\x=68.5

The minimum temperature is 68.5\; ^oF

Elden [556K]3 years ago
5 0

Answer:

Therefore the minimum and maximum temperature in the house are 68.5°F and 76.5°F respectively

Step-by-step explanation:

Given the equation that relates the minimum and maximum temperature of heat of a house as;

|x – 72.5| = 4

Since the function at the left hand side is an absolute value, the equation can be expressed in two ways because the modulus function can either be a negative function (for minimum temperature) or positive function (maximum temperature).

The equation can be rewritten the following ways;

-(x-72.5) = 4 ...1 OR

x-72.5 = 4 ... 2

Solving equation 1 to get x;

-x+72.5 = 4

-x = 4-72.5

-x = -68.5

x = 68.5°F (minimum temperature)

Solving equation 2 for x;

x-72.5 = 4

x = 4+72.5

x = 76.5°F (maximum temperature)

Therefore the minimum and maximum temperature in the house are 68.5°F and 76.5°F respectively

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