Tutors Answer Your Questions about Number-Line (FREE)
Question 1128499: In a chemistry class, students were learning about boiling point of various elements.Reuben has compiled a table that gives boiling points of each of various elements.
The lowest boiling point is of Element X: – 200 degrees Fahrenheit.
The highest boiling point is of Element Y: 550 degrees Fahrenheit
Find the difference between the lowest and highest boiling point.
__________________________________________________________________________
I know how to calculate the difference.
-200 – 550 = -750.
I am not sure if the answer is written as a negative or positive. Isn’t difference in temperature always written as its absolute value?
Will the answer be – 750 F or 750 F ?
Would greatly appreciate if you could explain what the correct answer is.
Click here to see answer by Alan3354(69443)   |
Question 1130050: The temperature in Brownsville fell from 25°F to −23°F in 8 minutes.
a. Write a numerical expression you can evaluate to find the average change in temperature per minute.
b. Find the mean change in temperature per minute.
Could you please explain the reasoning behind your answer such that I can explain to my child. This is my child's math homework who is a 6th grader.
Please note: I asked this question in the different area of this website and the tutor replied about how she has never heard temperature drop so quickly in nature!!! I did not make this question. It is straight out of my child's math textbook. As illogical as it may sound, the question is targeted at math and not weather accuracy.Would appreciate the answer please!
Click here to see answer by Boreal(15235)  |
Question 1131863: having trouble with this question. Thanks!
Abner got a building permit for a shed that limits its height to a maximum of 9.5 ft above the surface of the ground. He poured an above-ground foundation that was 4 inches thick, and the flat roof will add 6 inches to the height of the wall. He is going to build with concrete blocks that are 8 inches high (including the mortar).
a.
Write an inequality to calculate how many rows
of block he can lay without the shed exceeding the maximum height permitted.
b.
Solve the inequality
c.
Draw a number line and plot the solution set.
Click here to see answer by MathLover1(20849)  |
Question 1135847: A thermometer shows a temperature of -4.5℃. A nearby thermometer shows a temperature of -3.5℃. Explain how absolute value can be used to decide which temperature is warmer.
My son knows that -3.5℃ is warmer but doesn't know how to explain using absolute value.Would appreciate your help.
Click here to see answer by greenestamps(13200)  |
Question 1144329: I can’t figure this problem out. X=0.89 repeating decimal. 100x=89.89. 100x-x=89.89-?
Sue began converting the repeating decimal 0.89 above to a fraction so that she could use it during her calculations. Sue knew she had to set up equations, but as she began to solve it she was not sure of how to complete the problem. Help Sue solve the problem below by finding the fractional equivalent to the decimal 0.89 with a line over the 89.
Click here to see answer by ikleyn(52778)  |
Question 1144329: I can’t figure this problem out. X=0.89 repeating decimal. 100x=89.89. 100x-x=89.89-?
Sue began converting the repeating decimal 0.89 above to a fraction so that she could use it during her calculations. Sue knew she had to set up equations, but as she began to solve it she was not sure of how to complete the problem. Help Sue solve the problem below by finding the fractional equivalent to the decimal 0.89 with a line over the 89.
Click here to see answer by MathTherapy(10552)  |
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