Suppose that y is directly proportional to x. Use the given information to find the constant of proportionality k. Then use y = kx to find y for the given value of x.y = 49 when x = 7;
Find y given x = 17.
A. k = 9; y = 153
B. k = 343; y = 
C. k = 7; y = 119
D. k = - 7; y = - 119
Answer: C
Mathematics
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FInd the tangential and normal components of the acceleration.r(t) = 
(1 + t)3/2i + 
(1 - t)3/2j + 
tk
A. a = 
N
B. a = 
N
C. a = T + 
N
D. a = 
T
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Round the decimal to the given place value.3.817, nearest tenth
A. 3.817 B. 3.7 C. 3.8 D. 3.9
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Find the partial derivative of the dependent variable or function with respect to each of the independent variables.z = 
A. 
= - 
; 
= - 
B. 
= - 
; 
= - 
C. 
= - 
; 
= - 
D. 
= 
; 
= 
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Factor.5c4 - 625cd3
A. 5c(c - 5d)(c2 + 5cd + 25d2) B. 5c(c + 5d)(c2 - 5cd + 25d2) C. c(c + 5d)(c2 - 5cd + 25d) D. 5(c + 5)(c2 - 5c + 25)
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