Assume that y is directly proportional to x. If x = 28 and y = 21, determine a linear model that relates y and x.
a. 
b. 
c. 
d. 
c.
Mathematics
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Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.cos 2? = - 
, 
< 2? < ?Find sin ?.
A. - 
B. 
C. 
D. - 
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. x 
B. 
C. 16x
D. 
Mathematics
Determine if the given value is a solution to the equation. 4.9x - 8.3 = 3.95; -0.9
A. Solution B. Not a Solution
Mathematics
Round as indicated.3.4056 to two decimal places
A. 3.406 B. 3.40 C. 3.41 D. 3.4
Mathematics