Solve the problem.A simple exercise machine can be constructed by mounting a stiff spring securely to a wall and attaching a "T" handle to the free end of the spring. The arms can be exercised simply by pulling the "T" handle towards the torso. For a particular spring, the stretch distance is related to the work exerted by the equation x = 
, where W is the work exerted in joules and x is the stretch distance in cm. How far will you stretch the spring if you exert 623 joules of work? Round your answer to three decimal places.
A. 0.121 cm
B. 0.086 cm
C. 0.015 cm
D. 0.129 cm
Answer: A
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R1 = 47 ê, R2 = 53 ê, and R3 = 90. What is the value of RT?
a. 9.75 ê
b. 19.51 ê
c. 45.00 ê
d. 63.98 ê
e. 190.0 ê
Solve the problem.The linear equation y = 229x + 6320 provides an approximation of the annual cost (in dollars) to rent an apartment at the Leisure Village Retirement Community, where x = 1 represents 2011, x = 2 represents 2012, and so on. Write an equation that yields the same y-values when the exact year number is entered.
A. y = 229(2010 - x) + 6320 B. y = 229(2011 - x) + 6320 C. y = 229(x - 2011) + 6320 D. y = 229(x - 2010) + 6320
Add or subtract.-12 + 3
A. 15 B. -15 C. 9 D. -9
A triangular lot has sides 1,570 ft, 2,850 ft, and 1,810 ft long. Find its largest angle. Round your answer to the nearest tenth of a degree.
A. 
°
B. 
°
C. 
°
D. 
°
E. 
°