Solve the problem.It takes 90 J of work to stretch a spring 1 m from its equilibrium position. How much work is needed to stretch it an additional 0.5 m?
A. 112.5 J
B. 562.5 J
C. 292.5 J
D. 1462.5 J
Answer: A
Mathematics
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Answer the question.For x ? 2, the rational expression 
is equal to 3. Can the same be said for 
? Explain why or why not.
What will be an ideal response?
Mathematics
Find the indicated term of the arithmetic sequence.Given an arithmetic sequence with d = -5 and a4 = 14, find a20.
A. 71 B. 66 C. -71 D. -66
Mathematics
Add or subtract.
- 
A. - 
B. - 
C. - 4
D. - 1
Mathematics
Evaluate the discriminant for the equation. Then use it to predict the number of distinct solutions, and whether they are rational, irrational, or nonreal complex.w2 + 4w + 5 = 0
A. One rational solution (a double solution) B. Two distinct nonreal complex solutions C. Two distinct rational solutions D. Two distinct irrational solutions
Mathematics