Use Cramer's rule to solve the system.x - y = 6x + y = -8

A. ?
B.
C.
D.


Answer: C

Mathematics

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Solve the problem.A small frictionless cart, attached to the wall by a spring, is pulled 10 cm back from its rest position and released at time t = 0 to roll back and forth for 4 sec. Its position at time t is . What is the cart's maximum speed? When is the cart moving that fast? What is the magnitude of of the acceleration then?

A. ? ? 3.14 cm/sec; t = 0.5 sec, 1.5 sec, 2.5 sec, 3.5 sec; acceleration is 0 cm/sec2 B. 10? ? 31.42 cm/sec; t = 0 sec, 1 sec, 2 sec, 3 sec; acceleration is 0 cm/sec2 C. 10? ? 31.42 cm/sec; t = 0.5 sec, 2.5 sec; acceleration is 1 cm/sec2 D. 10? ? 31.42 cm/sec; t = 0.5 sec, 1.5 sec, 2.5 sec, 3.5 sec; acceleration is 0 cm/sec2

Mathematics

R1 = 3 Kê and R2 = 6 Kê. What is RT?



a. 9 Kê
b. 4 Kê
c. 3 Kê
d. 2 Kê
e. 1 Kê

Mathematics

Find an equation of the line having the specified slope and containing the indicated point. Write your answer in slope-intercept form.m = - ; (-10, 0)

A. f(x) = - x - 10
B. f(x) = x - 
C. f(x) = x + 
D. f(x) = - x - 

Mathematics

Write the complex number in the form a + bi.3 

A.  + i
B.  + i
C.  + i
D.  + i

Mathematics