Use the quadratic formula to solve the quadratic equation.3 - x2 = 8x
A. x = -4 ± 2
B. x = -1 ± 
C. x = 4 + 
D. x = -4 ± 
Answer: D
Mathematics
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Decide whether the statement makes sense. Explain your reasoning.A school district decides to add new teachers after a new school opens in the district. They use the Jefferson apportionment method to determine how many teachers each school should get. They are surprised to find that as a result of adding the new school, one of the existing schools loses a teacher.
What will be an ideal response?
Mathematics
Find the exact value of the expression.cos 
cos 
+ sin 
sin 
A. 
B. 
C. 
D. 1
Mathematics
Add or subtract. Write the answer in lowest terms.
+ 
A. 
B. 
C. 
D. 
Mathematics
Find the standard deviation. Round to one more place than the data.15, 11, 13, 7, 11, 15, 12, 19, 8, 15
A. 3.6 B. 3.1 C. 3.3 D. 1.4
Mathematics