Please help me with this problem 3.14 = 22/7 and r = 7/4
1 answer:
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9514 1404 393
Answer:
78.5 km
Step-by-step explanation:
Measured at the airport, the angle between the two planes is ...
180° -60° -50° = 70°
The law of cosines tells us the distance between the planes is ...
d = √(50² +80² -2·50·80·cos(70°)) ≈ √6163.84 ≈ 78.5 . . . km
The planes are about 78.5 km apart.
<h2>$650</h2>
Step-by-step explanation:
The principal amount recieves a simple interest every year. The simple interest rate is given as .
It is given that the total amount after 20 years is $812.50
Here is the principal amount,
is the interest rate,
is the time period.
∴ Samson had $650 when he opened the account.