Find the standard form of the equation of the sphere with the given characteristics.
?
Center: (-4, 1, -7); radius 9
A. 
B. 
C. 
D. 
E. 
Answer: E
Mathematics
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Use division to express the fraction in the form quotient + 
.
A. x + 5 + 
B. x + 6
C. x + 5 + 
D. 
Mathematics
Find two possible missing terms so that the expression is a perfect square trinomial.x2 + 
+ 
A. - 
x, 
x
B. - 
x, 
x
C. -81x, 81x
D. -9x, 9x
Mathematics
Use a proportion to solve the problem.On a map of the Fox River, 1 centimeter represents 3 kilometers. If a trail by the river is actually 13.80 kilometers long, what is the length of the trail on the map?
A. 10.8 cm B. 6.6 cm C. 5.8 cm D. 4.6 cm
Mathematics
Identify the point(s) on the surface 
where the tangent plane is horizontal.
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics