My vector calculator* tells me
100∠130° +25∠90° = 122.2∠122.3°
The plane's ground speed is 122.2 km/h and its course is 122.3° from north.
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* Graphing Calculator + Math app for Android by Mathlab Apps, LLC
First you divide the cost per the number of units (6):
$2.76/6=$0.46
Then you multiply the unitary cost per 15:
$0.46x15=$6.90 (this is the cost of a 15-pack)
Let x be the initial amount of money. We know that mum spent 2/3 of this amount, so she's left with
Of this remainder, only 1/4 was deposited, which is
And this amount equals 20, so we have
Answer: It would be option D :)
Step-by-step explanation: the formula for volume in a cylinder is π r squared times height. You plug those in and that’s your answer!
