Solve the problem.The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. If a 20-kg object stretches a spring 30 cm, how far will a 6-kg weight stretch the spring?
A. 4 cm
B. 56 cm
C. 1.5 cm
D. 9 cm
Answer: D
Mathematics
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Use a calculator to find the value of y in degrees rounded to two decimal places.y = cot-1 4.132
A. 14.01° B. 13.60° C. -13.60° D. 75.99°
Mathematics
For the given functions f and g , find the indicated composition.f(x) = x2 + 2x - 5, g(x) = x2 + 2x + 3(f?g)(4)
A. 762 B. 394 C. 778 D. 410
Mathematics
Simplify the expression by combining like terms, if possible.7a + 3b + 3 + 4b + 3a + 5
A. 10a + 7b + 8 B. 10a + 11b + 8 C. 25ab D. 10a2 + 7b2 + 8
Mathematics
Solve the system of equations.
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A) (–1, –7, 0)
B) (3, 3, 2)
C) {(2s – 3, 5s – 7, s) | s is any real number}
D) No solution
Mathematics