Add or subtract as indicated.-  + 

A. - 
B.
C.
D.


Answer: A

Mathematics

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Find a Cartesian equation for the line whose polar equation is given.r cos = 4

A. y = x + 4
B. y = x - 8
C. y = x - 8
D. y = x + 4

Mathematics

Use the rules of exponents to simplify the expression. Use positive exponents to write the answer.(-3x-4y-6)2

A.
B. - 
C. 9x8y12
D.

Mathematics

Solve the problem. Round to two decimal places unless otherwise indicated.If the average cost per unit C(x) to produce x units of plywood is given by C(x) = , what is the unit cost for 50 units?

A. $-4.00 B. $5.00 C. $0.60 D. $6.00

Mathematics

Find the mean. Round to the nearest tenth when necessary.The numbers of miles John ran over the last six days were as follows: 6, 5, 9, 4, 13, 10

A. Mean = 7.8 miles B. Mean = 9.4 miles C. Mean = 6.3 miles D. Mean = 8.3 miles

Mathematics