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20 Sep 2026, 05:21
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The solar recharge on June 10 increased the battery level by more than 90% relative to its level immediately before the recharge.: Yes
If the sensor calibration had not occurred, the lowest battery level during the period shown would have been 49%.: Yes
If the two events on June 7 had occurred in reverse order, with each event changing the battery level by the same number of percentage points shown in the table, the battery level after both events would still have been 51%.: Yes
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
59% (02:44) correct
41%
(03:15)
wrong
based on 46
sessions
History
Date
Time
Result
Not Attempted Yet
A research drone was used during a field survey from June 2 through June 10. The table shows every event during that period that changed the drone’s battery level. The battery level is expressed as a percentage of full charge. A positive change indicates that the battery was recharged, while a negative change indicates that battery charge was used. Changes in battery level are measured in percentage points. In each row, the battery level shown is the level immediately after the event. The battery level did not change except during the events shown.
For each of the following statements, select Yes if the statement can be verified as true based on the information provided. Otherwise, select No.
| Date | Event | Change in battery level (percentage points) | Battery level after event (%) |
|---|---|---|---|
| 2-Jun | mapping flight | -11 | 74 |
| 3-Jun | solar recharge | +18 | 92 |
| 3-Jun | mapping flight | -27 | 65 |
| 5-Jun | sensor calibration | -6 | 59 |
| 7-Jun | solar recharge | +23 | 82 |
| 7-Jun | mapping flight | -31 | 51 |
| 9-Jun | data transmission | -8 | 43 |
| 10-Jun | solar recharge | +41 | 84 |
For each of the following statements, select Yes if the statement can be verified as true based on the information provided. Otherwise, select No.
| Yes | No | |
| The solar recharge on June 10 increased the battery level by more than 90% relative to its level immediately before the recharge. | ||
| If the sensor calibration had not occurred, the lowest battery level during the period shown would have been 49%. | ||
| If the two events on June 7 had occurred in reverse order, with each event changing the battery level by the same number of percentage points shown in the table, the battery level after both events would still have been 51%. |
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Official Answer
The solar recharge on June 10 increased the battery level by more than 90% relative to its level immediately before the recharge.: Yes
If the sensor calibration had not occurred, the lowest battery level during the period shown would have been 49%.: Yes
If the two events on June 7 had occurred in reverse order, with each event changing the battery level by the same number of percentage points shown in the table, the battery level after both events would still have been 51%.: Yes
20 Sep 2026, 18:55
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1. Battery level before solar recharge is 43% and it does 41% recharge which is more than 90%
2. Sensor calibration changed -6%. So the lowest battery level if it hadnt occurred would have been 49%.
3. Changing the order of event would have no impact.
So, all 3 yes.
2. Sensor calibration changed -6%. So the lowest battery level if it hadnt occurred would have been 49%.
3. Changing the order of event would have no impact.
So, all 3 yes.
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