Evaluate both sides of the sum identity for cosine and sine for the given values of x and y. Evaluate the functions exactly.
B) 0, 0; –1, –1
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Find all the second order partial derivatives of the given function.f(x, y) = (x2 + y2)7
A. fxx(x, y) = 168x2(x2 + y2)5 + 14(x2 + y2)6; fyy(x, y) = 168y2(x2 + y2)5 + 14(x2 + y2)6; fxy(x, y) = fyx(x, y) = 168xy(x2 + y2)6 + (x2 + y2)7 B. fxx(x, y) = 168x2(x2 + y2)5 + 14(x2 + y2)6; fyy(x, y) = 168y2(x2 + y2)5 + 14(x2 + y2)6; fxy(x, y) = fyx(x, y) = 168xy(x2 + y2)5 + (x2 + y2)6 C. fxx(x, y) = 168x2(x2 + y2)5 + 14(x2 + y2)6; fyy(x, y) = 168y2(x2 + y2)5 + 14(x2 + y2)6; fxy(x, y) = fyx(x, y) = 168xy(x2 + y2)5 + 14(x2 + y2)6 D. fxx(x, y) = 168x2(x2 + y2)5 + 14(x2 + y2)6; fyy(x, y) = 168y2(x2 + y2)5 + 14(x2 + y2)6; fxy(x, y) = fyx(x, y) = 168xy(x2 + y2)5 + 14xy(x2 + y2)6
Translate the word statement into a percent proportion. Do not solve.What number is 102% of 54?
A. 
= 
B. 
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C. 
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D. 
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Solve the equation.4-x =
A.
B.
C.
D. 
Find the quotient and the remainder.x2 + 13x + 42 divided by x + 6
A. x + 7; remainder 0 B. x2 + 7; remainder 0 C. x - 36; remainder 0 D. x3 - 36; remainder 0