3. An expression is given.
- 2y + ZX
3 7
-xt.
2 4
which are equivalent to the given expression?
Select each correct answer.
1 7
A. -
ху +
2 4
3
B. -x-2y+
2
1 3
C. - y + y + x)
(y + x)
4 2
1
D.
-2y+
.
줄
11-8y +6x +7)
4

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.

In parallelogram abcd the ratio of ab to bcis 5: 3. if the perimeter of abcd is 32 find ab