Solve the radical equation. Check all proposed solutions.x - 
= 4
A. x = 1, 2
B. x = 9
C. x = -1
D. x = 2, 9
Answer: B
Mathematics
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Multiply and simplify.
? 
A. 5m
B. 
C. 
D. 10
Mathematics
Use a spherical coordinate integral to find the volume of the given solid.the solid between the sphere 
and the cardioid of revolution 
A. 990? B. 495? C. 396? D. 792?
Mathematics
Find the length of the curve.y = ln(sec x) from x = 0 to x = ?/4
A. ln(1 - 
)
B. ln(
+ 1)
C. ln
D. ln
Mathematics
Find the logarithm using the change-of-base formula.log100 30
A. 0.7386 B. 3.4012 C. 4.6052 D. 1.354
Mathematics