State the real number that corresponds to the situation.On a cloudy day, the water temperature in the swimming pool drops 4 degrees.
A. -4
B. 4
Answer: A
Mathematics
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Use the given triangles to evaluate the expression. Rationalize all denominators. 
cot 60° - cos 45°
A. 
B. 
C. 
D. 
Mathematics
Graph the equation.y = x2 + 5
A. 
B. 
C. 
D. 
Mathematics
Express the polynomial in descending order. If the polynomial is already in descending order, so state.4y3 - 7y2 + 5
A. already in descending order B. -3y + 5 C. 5 - 7y2 + 4y3 D. -4y3 + 7y2 - 5y
Mathematics
Perform row operations on the augmented matrix as far as necessary to determine whether the system is independent, dependent, or inconsistent. x + y - 2z = 83x + z = - 62x - y + 3z = -14
A. Dependent B. Independent C. Inconsistent
Mathematics