Mathematics, 05.05.2020 02:01 tonyrod617
Alan used the expression StartFraction 5 over 9 EndFraction (F minus 32), where F is a temperature in degrees Fahrenheit, to convert a temperature from Fahrenheit to Celsius. He evaluated the expression as shown below and found that 45 degrees Fahrenheit was equivalent to –7 degrees Celsius.
StartFraction 5 over 9 EndFraction (F minus 32) = StartFraction 5 over 9 (45 minus 32) = 25 minus 32 = negative 7
What error did Alan make?
He substituted 45 for F instead of –7 and should have found the answer to be Negative 21 and two-thirds degrees Celsius.
He did not combine within the parentheses first before multiplying and should have found the answer to be 7 and StartFraction 2 over 9 EndFraction degrees Celsius.
He multiplied 45 by the fraction incorrectly and should have found the answer to be 49 degrees Celsius.
He divided 5F by 9 before subtracting 32 and should have found the answer to be 21 and StartFraction 4 over 9 EndFraction degrees Celsius.
PLEASE HELP
Answers: 3
Another question on Mathematics
Mathematics, 21.06.2019 16:00
Asap for seven months an ice creams vendor collects data showing the number of cones sold a day (c) and the degrees above 70 degrees f the vendor finds that there is a positive linear association between c and t that is the best modeled by this equation c=3.7t+98 which statement is true? the model predicts that the average number of cones sold in a day is 3.7 the model predicts that the average number of cones sold i a day is 98 a model predicts that for each additional degree that the high temperature is above 70 degres f the total of number of cones sold increases by 3.7 the model predicts for each additional degree that the high temperature is above 70 degrees f the total number of cones sold increasingly by 98
Answers: 3
Mathematics, 21.06.2019 17:00
The rectangle on the right is the image of the rectangle on the left. what transformation would result in this image? reflection rotation translation dilation
Answers: 2
Mathematics, 21.06.2019 18:00
Write an equation in slope intercept form of the line passes through the given point and is parallel to the graph of the given equation (0,0); y=3/8 x+2
Answers: 1
Mathematics, 21.06.2019 19:50
Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato
Answers: 2
You know the right answer?
Alan used the expression StartFraction 5 over 9 EndFraction (F minus 32), where F is a temperature i...
Questions
Mathematics, 26.10.2020 01:00
Mathematics, 26.10.2020 01:00
Mathematics, 26.10.2020 01:00
Social Studies, 26.10.2020 01:00
Mathematics, 26.10.2020 01:00
Mathematics, 26.10.2020 01:00
History, 26.10.2020 01:00
