Provide an appropriate response.A student is solving the equation s2 = 22 and has determined that s = 2. He or she has looked up the answer in the back of the book and finds that s = -2 is also a solution. The student feels that this is a misprint. How would you advise him or her?
What will be an ideal response?
22 = (-2)2 = s2 are both solutions.
Mathematics
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Solve using the problem-solving strategy for systems of linear equations.The three angles in a triangle always add up to 180°. If one angle in a triangle is 72° and the second is 5 times the third, what are the three angles?
A. 72°, 89°, 19° B. 72°, 91°, 17° C. 72°, 88°, 20° D. 72°, 90°, 18°
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Multiply.-2x2(3x - 5)(3x + 5)
A. -18x4 + 50x2 B. 18x4 - 50x2 C. -18x3 + 50x D. 18x4 + 50x2
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Solve the problem.If two fair dice are rolled, what is the probability that a total of four shows?
A. 
B. 
C. 
D. 
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Provide an appropriate response.Simplify the rational expression: 
A. 
B. 
a4b2
C. 
D. 
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