Find the expression.u = 
Find 
A. 
B. 
C. 5
D. 
Answer: A
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Provide an appropriate response. Solve the system of equations graphically:x + 2y = 103x - y = 2
A. 
B. 
C. 
D. 
Transform the polar equation to an equation in rectangular coordinates. Then identify and graph the equation.r sin ? = 4
A. x = 4; vertical line 4 units
to the right of the pole
B. y = -4; horizontal line 4 units
below the pole
C. x = -4; vertical line 4 units
to the left of the pole
D. y = 4; horizontal line 4 units
above the pole
Verify the identity.cot2 x + csc2 x = 2 csc2 x - 1
What will be an ideal response?
Solve the problem.The letters of the word "PENCIL" are arranged in a random order.(a) How many different arrangements are possible?(b) How many start with a vowel?(c) How many start with "E" and end with "C"?
What will be an ideal response?