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tigry1 [53]
3 years ago
6

The temperature in my apartment measured 72 degrees on Friday. I went out of town and accidentally left the window open over the

weekend. The temperature in the apartment measured 59 degrees on Monday. What was the change in temperature between Friday and Monday?
Mathematics
1 answer:
damaskus [11]3 years ago
3 0
13 degrees is the difference between Friday and Monday.
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2x +2 -1x-(2x +1-1-2)
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-x+4

Step-by-step explanation:

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Why do you think students have difficulty understanding the concept of a mathematical function?
pantera1 [17]

Answer:

Because they have never had to express one quantity in terms of another. The idea of such a relationship is completely new, as is the vocabulary for expressing such relationships.

Step-by-step explanation:

"Function" is a simple concept that says you can relate two quantities, and you can express that relationship in a number of ways. (ordered pairs, table, graph)

The closest experience most students have with functions is purchasing things at a restaurant or store, where the amount paid is a function of the various quantities ordered and the tax. Most students have never added or checked a bill by hand, so the final price is "magic", determined solely by the electronic cash register. The relationship between item prices and final price is completely lost. Hence the one really great opportunity to consider functions is lost.

Students rarely play board games or counting games (Monopoly, jump rope, jacks, hide&seek) that would give familiarity with number relationships. They likely have little or no experience with the business of running a lemonade stand or making and selling items. Without these experiences, they are at a significant disadvantage when it comes to applying math to their world.

4 0
2 years ago
If you get this right I will mark you as a brainliest
harina [27]
It would be c your welcome
6 0
3 years ago
Use the given frequency distribution to find the class width, class midpoint, and class boundaries​
Harman [31]

Based on the table attached, the class boundaries are as follows: 43.5, 49.5, 53.5, 59.5, 63.5, 69.5, 73.5, 79.5.

<h3 /><h3>What is the frequency distribution about?</h3>

Temperature (°F) Frequency

40-44 1

45-49 3

50-54 5

55-59 11

60-64 7

65-69 7

70-74 1

A. Viewing at the frequency table, we find that the lower class limits of two consecutive classes are 40 and 44, respectively. Thus the class width is:

 Class width = 44 − 40= 4

B: One can find the class midpoints by putting the average of the lower and upper class limits. So the midpoint of the first class is  seen below:

=  40  - 44 = \frac{40 + 44}{2}   = 42. In a similar way, we find the rest.

C. The Class boundaries is known to be that which separate the classes removing the class limits. The class boundaries are as follows:

43.5, 49.5, 53.5, 59.5, 63.5, 69.5, 73.5, 79.5

Therefore, Based on the table attached, the class boundaries are as follows: 43.5, 49.5, 53.5, 59.5, 63.5, 69.5, 73.5, 79.5.

Learn more about frequency distribution from

brainly.com/question/1094036

#SPJ1

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2 years ago
Using the simple random sample of weights of women from a data​ set, we obtain these sample​ statistics: nequals45 and x overbar
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