Answer:
x + y = 500
215x + 615y = 187,500
Step-by-step explanation:
The first equation can show the amount of land. The farmer has 500 acres to plant corn, x, and cotton, y.
x + y = 500
The second equation can show the cost. The farmer has $187,500 to invest when corn costs $215 per acre and cotton costs $615 per acre.
215x + 615y = 187,500
The system of equations is
x + y = 500
215x + 615y = 187,500
<span>The answer is 6x^2y^2z(xy+2z^2).</span>
Given:
In triangle 
.
To find:
The 
.
Solution:
According to the law of sines:
Taking 
, we get
Taking sin inverse on both sides, we get
Therefore, the correct option is b.
The candle would be 4.5 inches tall after three hours.
