Write the expression without using absolute value symbols.
?
?
?
?
A. 19
B. 
C. 5
D. 
E. -19
Answer: E
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Assuming that the equations define x and y implicitly as differentiable functions 
find the slope of the curve 
at the given value of t.x cos t + x = 2t, y = t sin t + t, t = 
A. 2
B. 
C. 2 + ?
D. 
A certain tree grows by 2/t + e(-t2/2) feet per year, where t is the time in years. Use the trapezoidal rule with whole year intervals to estimate the total growth during the stated time interval.From t = 1 to t = 8
A. 6.178 ft B. 4.761 ft C. 5.947 ft D. 5.769 ft
Given points P, Q, R, and S, determine whether lines
and 
are perpendicular, parallel, or neither.P(1, 4), Q(5, 8), R(3, 0), S(15, -12)
A. Neither B. Perpendicular C. Parallel
Let x represent one number and let y represent the other number. Use the given conditions to write a system of nonlinear equations. Solve the system and find the numbers.The sum of two numbers is -6 and their product is -7. Find the numbers.
A. -7 and 1; 7 and -1 B. 7 and -1 C. -7 and 1 D. -7 and -1; 7 and 1