Question 561733: what is the formula for Fahrenheit scale is a linear function of temperature on the celsius scale.
Ten degrees celsius equal 50 degrees fahrenheit,and 25 degrees celsius equals 77 degrees fahrenheir
Answer by Edwin McCravy(20056)   (Show Source):
You can put this solution on YOUR website! what is the formula for Fahrenheit scale is a linear function of temperature on the celsius scale.
Ten degrees celsius equal 50 degrees fahrenheit,and 25 degrees celsius equals 77 degrees fahrenheir
1. Add 40
Remember the "four F" rule: "Fahrenheit First, Five First"
2. Multiply by 5 if Fahrenheit is First, otherwise mutiply by 9
3. Divide by 9 if you multiplied by 5 in step 2, otherwise divide by 5
Notice that steps 2 and 3 are always 5 and 9 or 9 and 5. Five First
if Fahrenheit is First
4. Subtract 40.
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Suppose we have 50°F to change to Celcius
1. Add 40°
We get 50°+40°=90°.
Remember the "four F" rule: "Fahrenheit First, Five First"
We began with °F so we say "Five first".
2. Multiply by 5 if Fahrenheit is First, otherwise mutiply by 9
We had F first, so we multiply by 5 first and we get 90°x5 = 450°.
3. Divide by 9 if you multiplied by 5 in step 2, otherwise divide by 5
We multiplied by 5 in step 2, so we divide by 9 and we get 450°÷9 = 50°.
Notice that steps 2 and 3 are always 5 and 9 or 9 and 5. Five First
if Fahrenheit is First
Yes we noticed that
4. Subtract 40.
We subtract 40° and we get 50°-40° = 10°C.
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Now let's go backwards and start with 10°C and see if we can get 50°F
1. Add 40°
We get 10°+40°=50°.
Remember the four F rule: "Fahrenheit First, Five First"
We began with °C so we DO NOT say "Five first".
2. Multiply by 5 if Fahrenheit is First, otherwise mutiply by 9
We DO NOT have F first, so we multiply by 9 first and we get 50°x9 = 450°
3. Divide by 9 if you multiplied by 5 in step 2, otherwise divide by 5
We multiplied by 9 in step 2, so we divide by 5 and we get 450°÷5 = 90°.
Notice that steps 2 and 3 are always 5 and 9 or 9 and 5. Five First
if Fahrenheit is First
Yes we noticed that.
4. Subtract 40.
We subtract 40° and we get 90°-40° = 50°F.
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Suppose we have 77°F to change to Celcius
1. Add 40°
We get 77°+40°=117°
Remember the "four F" rule: "Fahrenheit First, Five First"
We began with °F so we say "Five first"
2. Multiply by 5 if Fahrenheit is First, otherwise mutiply by 9
We had F first, so we multiply by 5 first and we get 117°x5 = 585°
3. Divide by 9 if you multiplied by 5 in step 2, otherwise divide by 5
We multiplied by 5 in step 2, so we divide by 9 and we get 585°÷9 = 65°
Notice that steps 2 and 3 are always 5 and 9 or 9 and 5. Five First
if Fahrenheit is First
Yes we noticed that.
4. Subtract 40.
We subtract 40° and we get 65°-40° = 25°C.
------------------------------------------------------------
Now let's go backwards and start with 25°C and see if we can get 77°F
1. Add 40°
We get 25°+40°=65°.
Remember the four F rule: "Fahrenheit First, Five First"
We began with °C so we DO NOT say "Five first".
2. Multiply by 5 if Fahrenheit is First, otherwise mutiply by 9
We DO NOT have F first, so we multiply by 9 first and we get 65°x9 = 585°.
3. Divide by 9 if you multiplied by 5 in step 2, otherwise divide by 5
We multiplied by 9 in step 2, so we divide by 5 and we get 585°÷5 = 117°.
Notice that steps 2 and 3 are always 5 and 9 or 9 and 5. Five First
if Fahrenheit is First
Yes we noticed that.
4. Subtract 40.
We subtract 40° and we get 117°-40° = 77°F.
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Edwin
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