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Define the numbers:
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Let x be one number.
One number = x
Other number = 5x
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Construct the equation:
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5x - x = 80
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Combine like terms:
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4x = 80
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Divide by 4 on both sides:
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x = 20
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Find the 2 numbers:
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One number = x = 20
Other number = 5x = 5(20) = 100
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Answer: The two numbers in increasing order are 20 and 100.
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Answer:
subtract 5, then add 7
Step-by-step explanation:
Answer:
It cooled 58.4 degrees
Step-by-step explanation:
T(t) = 68 + 144e ^(-.052t)
We want to find the value when t= 10
T(10) = 68 + 144e ^(-.052*10)
= 68 +85.611
T(10) =153.611
We also need to know
T(0)= 68 + 144e ^(-.052*0)
=68+144
=212
We want to know how much it cools
That would be the temperature at time 0 minus the temperature at time 10
T(0) - T (10)
212-153.611
58.389
To the nearest tenth
58.4 degrees
