Find the vector v having length |v| = 2, and direction ? = 135°.
What will be an ideal response?
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Find the values of the variables for which the statement is true, if possible.
+ 
= 
A. a = -9; b = 8; c = -5; d = -13; e = -7; f = -12
B. a = 3; b = 2; c = 5; d = -1; e = 7; f = 0
C. a = 9; b = -8; c = 11; d = 13; e = -1; f = 12
D. a = - 2; b = - 
; c = -9; d = - 
; e = -12; f = - 1
Solve the problem using two linear equations in two variables and Cramer's rule.Twice the water flow in the hot-water pipe is the same as three times the flow in the cold-water pipe. The combined flow is 1200 liters/hr. What is the flow in each pipe?
A. 720 liters/hr hot, 480 liters/hr cold B. 600 liters/hr hot, 400 liters/hr cold C. 480 liters/hr hot, 720 liters/hr cold D. 400 liters/hr hot, 600 liters/hr cold
For a test question, a mathematics teacher wants to find two constants a and b such that the test item "Simplify 
)" will have an answer of 
. What constants should the teacher use for a and b?
? a = __________ ? b = __________ What will be an ideal response?
Simplify the fraction. (Write the fraction in lowest terms.) If the fraction cannot be simplified, so state.
A. cannot be simplified
B. 
C. 
D. 