Simplify the given algebraic expression.x3 + x2 + x + 1
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Write each whole number in expanded form.75,482
A. 75,482 B. 70,000 + 5000 + 400 + 80 + 2 C. 7000 + 500 + 40 + 82 D. 20,000 + 8000 + 400 + 50 + 7
Mathematics
Write the phrase as a variable expression. Use x to represent "a number."Nine times a number, decreased by 46
A. 9(x + 46) B. 9(x - 46) C. 9x - 46 D. 9x + 46
Mathematics
The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r sin ? = 10
A. y = 10 B. x = 10y C. x = 10 D. y = 10x
Mathematics
Use a reference angle to find the exact value of the expression.cos 210°
A. 
B. 
C. - 
D. - 
Mathematics