This frequency table gives the distribution of ages of 100 people in a small town.
How many people are:10 years of age or older
A. 93
B. 11
C. 82
D. 7
Answer: A
Mathematics
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Solve the problem.The gravitational force (in lb) of attraction between two objects is given by 
where x is the distance between the objects. If the objects are 5 ft apart, find the work required to separate them until they are 50 ft apart. Express the result in terms of k.
A. 
k
B. 
k
C. 
k
D. 
k
Mathematics
Sketch the surface z = f(x,y).f(x, y) = 1 - 
A. 
B. 
C. 
D. 
Mathematics
Solve the given differential equation (where the function is subject to the given conditions) by using Laplace transforms.y' + 9y = 0, y
= -1
A. y = - e9t B. y = e-9t C. y = 9e-t D. y = - e-9t
Mathematics
Use Heron's formula to find the area of the triangle. Round to the nearest square unit.a = 7, b = 13, c = 7
A. 17 B. 9 C. 36 D. 34
Mathematics