Find the inverse of the matrix, if it exists.A = 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the absolute value.
A. 0
B. 1
C. ± 1
D. - 1
Mathematics
Solve the system of equations using substitution.
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Given 1 inch = 2.54 centimeters, use dimensional analysis to change 508 centimeters to inches.
Fill in the blank(s) with the appropriate word(s).
Mathematics
Solve the problem.A 100-liter mixture of chlorine and water is 8% chlorine. (i) Write a rational expression in x whose values give the percentage (in decimal form) of the mixture that is chlorine when x gallons of water are added to the mixture. (ii) Find the percentage of chlorine in the mixture if 70 gallons of water are added to it. Round to the nearest percent, if necessary.
A. (i) 
;
(ii) 11%
B. (i) 
;
(ii) 154%
C. (i) 
;
(ii) 5%
D. (i) 
;
(ii) 8%
Mathematics