Find the exact value of the product.cos 45° cos 15°
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find all the first order partial derivatives for the following function.f(x, y) = x3 - 10x2y - 5xy3
A. 
= x2 - 10xy - 5y3; 
= -10x2 - 5xy2
B. 
= 3x2 - 20xy - 5y3; 
= -10x2 - 15xy2
C. 
= 3x2 + 2xy - 5y3; 
= -10x2 + 3xy2
D. 
= 3x2; 
= -10x2 - 15xy2
Mathematics
Use a graphing calculator to evaluate the sum. Round to the nearest thousandth.
A. 2.360 B. 2.001 C. 3.042 D. 2.682
Mathematics
Solve the linear equation.0.09y + 0.13(1000 - y) = 0.21y
A. {32.5} B. {1560} C. {520} D. {325}
Mathematics
Provide an appropriate response.Which one of the following ratios is not the same as 5 to 2?
A. 25 to 10 B. 10 to 4 C. 50 to 20 D. 2 to 5
Mathematics