Express the statement as a formula.
M varies directly as x and inversely as y
Use the information that if x = -20 and y = 4 then M = -25 to find the constant of proportionality.
(a) 15
(b) 7
(d) 6
(e) 9
(c) 5
Mathematics
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Decide whether or not the functions are inverses of each other.f(x) = 3x - 3, g(x) = 
x + 1
A. Yes B. No
Mathematics
Solve the problem.A class consists of 15 girls and 7 boys. In how many ways can 3 girls and 3 boys be selected from this class to form a team?
A. 910 B. 15,925 C. 143,325 D. 70
Mathematics
Simplify.i10
A. i B. -i C. -1 D. 1
Mathematics
Write the system of equations associated with the augmented matrix. Do not solve.
A. -5x - 6y = 6 -2x + 5y = 2 B. -6x - 5y = 6 -2x + 5y = 2 C. -6x - 5y = 6 5x - 2y = 2 D. -6x - 5y = 0 -2x + 5y = 0
Mathematics