HALP 30 POINTS A student did an experiment with two identical fish tanks, Tank 1 and Tank 2. About 20 mL water purifier was added to Tank 1 and 10 mL water purifier was added to tank 2. Tank 1 was heated to 88° F and Tank 2 was left at room temperature. The water purity of each tank was tested every day in particles per liter. The purity was recorded over a period of 5 weeks in the table shown below.

Week Water Purity of Tank 1 Water Purity of Tank 2

1 12.6 12.6

2 13.7 13.9

3 14.3 14.4

4 15.7 15.8

5 17.6 17.6

Based on the table, which of these conclusions is correct?

Fish need 10 mL of water purifier to survive.

More purifier is needed to keep heated water clean.

Water purifier can help a fish survive longer.

Water purifier keeps fish tanks clearer for longer.

y + 11 = (1/4)(x + 16)

step-by-step explanation:

30005

yes ok                                            

nswer: a   y-axis

step-by-step explanation:

0 and 5 minutes

step-by-step explanation:

given that one morning eight buses arrive late by the number of minutes given below:

0 8 2 6 9 2 0 7 8

write these in ascending order

0   0 2 6 7 8 8 9

in the afternoon two more buses arrive at the bus stop say by x and y minutes late.

total number of buses = 10

median = average of 4th and 5th after arranging in ascending order

since 4th entry is 6, the values of x and y should be below 6

also given 0 is the mode so either x or y or both should be 0 because then only 0 gets the maximum frequency and hence mode

thus we have

0 0 0 2 6 7 8 8 9 and another unknown entry which is below 6.

since median is 3.5, we have the unknown entry to be 5 only because then only median =( 2+5)/2

thus the after noon buses were late by 0 and 5 minutes.