A circuit overloads at 2400 watts of electricity. A portable heater that uses 1050 watts of electricity is plugged into the circuit. a. Identify an inequality that represents the additional number x of watts you can plug in without overloading the circuit.

In addition to the portable heater, what two other items in the table can you plug in at the same time without overloading the circuit? Is there more than one possibility? Explain.

You can add 1350 additional watts without overloading the circuit.

Step-by-step explanation:

a.

Given that the circuit overloads at 2400 watts

Electricity used by heater = 1050 watts

Let x = the number of additional watts.

Electricity used by heater + Additional watts ≤ Circuit's capacity

1050 + x ≤ 2400

1050 - 1050 + x ≤ 2400 - 1050

x ≤ 1350

There aren't any appliances listed in the question, but assuming this is the same question as other questions from online, a clock radio, a toaster, and a blender would work, which have 50 watts, 300 watts, and 80 watts respectively. If there are other appliances in your problem, here is what you should do.

Step-by-step explanation:

b.

Since x ≤ 1350, that means every appliance you choose has to have below 1350 or 1350 watts of power. Whichever appliances follow these requirements should be the correct answer to the second part of the question.

the results from a pre-test for students for the year 2000 and the year 2010 are illustrated in the box plot. what do these results tell us about how students performed on the 29 question pre-test for the two years?

if we compare only the lowest and highest scores between the two years, we might conclude that the students in 2010 did better than the students in 2010. this conclusion seems to follow since the lowest score of 8 in 2010 is greater in value than the lowest score of 6 in 2000. also, the highest score of 28 in 2010 is greater in value than the highest score of 27 in 2000.

but the box portion of the illustration gives us more detailed information. the middle bar in each box shows us that the median score of 20 in 2000 is greater in value than the median score of 17 in 2010. further, we note that the box and whiskers divide the illustration into four pieces. each of these four pieces represents the same portion of students. so, the upper half of the students in 2000 scored in the same score range as the upper one-fourth of the students in 2010, see the illustration at a score of 20.

by considering the upper one-fourth, upper half, and upper three-fourths instead of just the lowest and highest scores, we would conclude that the students as a whole did much better in 2000 than in 2010. we would conclude that as a whole the students in 2010 are less prepared than the students in 2000.

in this section, we discuss box-and-whisker plots and the five key values used in constructing a box-and-whisker plot. the key values are called a five-number summary, which consists of the minimum, first quartile, median, third quartile, and maximum.

step-by-step explanation: