Solve the problem.Write the next three "triangular" figurate numbers.
Fill in the blank(s) with the appropriate word(s).
10, 15, 21
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Solve the equation.p6 + 65p3 + 64 = 0
A. {-1, -64} B. {-1, -4} C. {1, 64} D. {1, 4}
The augmented matrix is in row-echelon form and represents a system of linear equations. Solve the system using back-substitution.
A. {(60, -21, 5)} B. {(60, -23, 5)} C. ? D. {(65, -23, 5)}
Solve the problem.The loudness of sound can be measured on a decibel scale. The sound level L (in decibels) of a sound is given by 
where I is the intensity of the sound (in watts per square meter, W/m2) and 
A certain sound has intensity of 
Find the decibel value of this sound? (Round to the nearest whole number.)
A. 9 decibels B. 204 decibels C. 79 decibels D. 89 decibels
Find the exact value of the expression.cos 
A. 
B. 
C. 
D. 