Add. Simplify, if possible.
+ 
A. 
+ 
B. 
C. 
D. 
Answer: D
Mathematics
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Make the required change in the given equation.z = cot ? to Cartesian coordinates
A. z = 
B. x2 + y2 = z
C. 
= 
D. z = 
Mathematics
Solve. r(r - 6) = -9
A. -3 B. 3 C. 9, 3 D. 3, -3
Mathematics
The double-line graph shows temperature highs and lows for a week. 
What day was the temperature the lowest? What was this low temperature?
A. Thursday; 70°F B. Saturday; 70°F C. Friday; 69°F D. Friday; 72°F
Mathematics
Simplify the expression.
- 
A. 
B. 
C. 
D. 
Mathematics