So far in art class, a student’s quiz scores are 89%, 89%, 82%, and 77%. What score does the student need on the fifth quiz to have a mean quiz score of 86%? All the quizzes have equal weights. Round your answer to the nearest whole number.
a. 85%
b. 84%
c. 92%
d. 93%
d. 93%
Mathematics
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Solve.There are currently 54 million cars in a certain country, decreasing by 2.6% annually. How many years will it take for this country to have 25 million cars? Round to the nearest year.
A. 11 years B. 130 years C. 30 years D. 3 years
Mathematics
Find all the first order partial derivatives for the following function.f(x, y, z) = xz
A. 
= z
; 
= 
; 
= x
B. 
= z
; 
= 
; 
= x
C. 
= z
; 
= - 
; 
= x
D. 
= z
; 
= - 
; 
= x
Mathematics
Determine whether the proportion is true or false.
= 
A. True B. False
Mathematics
Determine whether the three points are collinear.(0, -9), (7, -7), (-7, -11)
A. Yes B. No
Mathematics