Solve the system of equations by using the inverse of the coefficient matrix if it exists and by the echelon method if the inverse doesn't exist.-10x + 4y = 6 6x - y = 2
A. (4, 1)
B. (-4, -1)
C. (-1, -4)
D. (1, 4)
Answer: D
Mathematics
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Solve.
- 
= 
A. 42 B. 14 C. 28 D. -14
Mathematics
Change the word statement to an equation. Use x as the variable.The sum of two-thirds a number and 12 is 41.
A. 
x + 41 = 12
B. 
x ? 12 = 41
C. 
x + 12 = 41
D. 
x - 12 = 41
Mathematics
Find the domain and range of the inverse of the given function.f(x) = 
A. Domain: (-?, ?) Range: (-?, -7) ? (-7, ?) B. Domain: (-?, -7) ? (-7, ?) Range: (-?, 0) ? (0, ?) C. Domain: (-?, -7) ? (-7, ?) Range: (-?, ?) D. Domain: (-?, 0) ? (0, ?) Range: (-?, -7) ? (-7, ?)
Mathematics
The graph is a translation of one of the basic functions defined by y = x2, y = x3, y = 
, or y = 
. Find the equation that defines the function.
A. y = -5(x - 3)2 B. y = (x - 3)2 - 3 C. y = (x - 5)2 - 3 D. y = 5(x + 3)2
Mathematics