Factor the perfect square.x2 + 40x + 400
A. (x - 20)2
B. (x + 20)2
C. (x + 20)(x - 20)
D. x2 + 40x + 400
Answer: B
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In order to answer the given question, which of the following types of study would be the most appropriate: an experiment without blinding, an experiment with single blinding, an experiment with double blinding, an observational study, or a case-control study?What percentage of the population reads a newspaper on a regular basis?
A. Observational study B. Case-control study C. Experiment without blinding D. Experiment with double blinding E. Experiment with single blinding
Draw the graph of the equation.
+ 
= 1
A. 
B. 
C. 
D. 
Find the solution by graphing the system of equations.A tour group split into two groups when waiting in line for food at a fast food counter. The first group bought 6 slices of pizza and 5 soft drinks for $26.85. The second group bought 5 slices of pizza and 4 soft drinks for $22.06. We can represent this situation with the system of equations 6p + 5s = 26.85 5p + 4s = 22.06where p is the cost of a slice of pizza and s is the cost of a soft drink. Determine the cost of one slice of pizza.
A. $2.40 per slice of pizza B. $1.89 per slice of pizza C. $2.90 per slice of pizza D. $2.39 per slice of pizza
Evaluate
using the formula from this section.
?
?
A. 11 B. 1 C. 55 D. 165 E. 330