Solve the problem.y varies jointly as x and z. y = 7.5 when x = 75 and z = 10. Find y when x = 55 and z = 10.
A. 55
B. 550
C. 11
D. 5.5
Answer: D
Mathematics
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Find the linearization L(x) of the given function for the given value of a.f(x) = 
, a = 8
A. L(x) = 
+ 
B. L(x) = 
+ 
C. L(x) = 
+ 4
D. L(x) = 
+ 
Mathematics
Find the unknown side of the right triangle. Use a calculator or square root table when necessary and round to the nearest thousandth.
A. 15 m B. 14 m C. 10.5 m D. 7.937 m
Mathematics
Write an equation in slope-intercept form of the line satisfying the given conditions.Through (9, 9), perpendicular to -4x - 3y = -9
A. y = - 
x + 
B. y = - 3x - 3
C. y = 
x + 
D. y = 
x + 
Mathematics
Simplify. Do not leave negative exponents in your answer.r-2
A. 
B. r1/2
C. -r2
D. - 
Mathematics