Simplify the expression:
a. 23
b. 13
c. -13
d. 4
a. 23
Mathematics
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Find the infinite sum accurate to three decimal places.
A. 1.036 B. 0.972 C. -1.036 D. -0.972
Mathematics
Solve the system of equations by the elimination method. Check your solutions. For any dependent equations, write your answer in the ordered pair form.
A. 
B. 
C. ?
D. 
Mathematics
Graph the inequality.3x + 5y ? 15
A. 
B. 
C. 
D. 
Mathematics
Use a calculator to find the function value to four decimal places.sin 72°50'33''
A. 0.2936 B. 3.2556 C. 1.9559 D. 0.9555
Mathematics