Determine whether the variation model is of the form 
or 
and find k. Then write a model that relates y and x.
x
5
10
15
20
25
y
-1.5
-3
-4.5
-6
-7.5
A. 
B. 
C. 
D. 
E. 
Answer: C
Mathematics
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Use the power-reducing identities to rewrite the expression that does not contain trigonometric functions of power greater than 1.cos4 x
A. 
B. 
C. 
D. 
Mathematics
Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. x = - 
, y = 
; 
B. x = 
, y = - 
; 
C. x = 
, y = - 
; 
D. x = 
, y = 
; 
Mathematics
Find the midpoint of the line segment joining the points P1 and P2.P1 = (-0.1, -0.8); P2 = (2, -1.5)
A. (0.95, -1.15) B. (-1.15, 0.95) C. (-0.35, 1.05) D. (1.05, -0.35)
Mathematics
Solve the triangle. 
A. B = 45°, a = 4.4, c = 6.2 B. B = 40°, a = 6.2, c = 4.4 C. B = 40°, a = 4.4, c = 6.2 D. B = 35°, a = 6.2, c = 4.4
Mathematics