Simplify the expression.(3-2)-1

A. 3
B.
C.
D. 9


Answer: D

Mathematics

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Parametrize the surface S.S is the portion of the sphere x2 + y2 + z2 = 81 between z = -  and z = 

What will be an ideal response?

Mathematics

Find the exact value of the expression.

A.
B.
C.
D. 2

Mathematics

The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport.  At what time was the temperature its lowest?

A. 4 p.m. B. 9 a.m. C. 1 p.m. D. 6 p.m.

Mathematics

Simplify.The volume of a spherical shell with outer radius R and inner radius r is  Write this formula without parentheses and without multiplication signs.

A. V =  - r3
B. V = 
C. V =  
D. V = 4?R3 - 4?r3 

Mathematics