Find the indicated sum or difference, if it is defined.
+ 
A. 
B. 
C. 
D. not defined
Answer: A
Mathematics
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Solve the problem.When P dollars is invested at interest rate i, compounded annually, for t years, the investment grows to A dollars, where A = P(1 + i) t . Find the interest rate i if $2420 grows to $3550 in 2 years. Round your answer to the nearest hundredth of a percent.
A. 10.56 % B. 46.69 % C. 21.12 % D. 23.35 %
Mathematics
Establish the identity.
= cot ? - cot ?
What will be an ideal response?
Mathematics
Find all positive and negative integers b such that the trinomial is factorable.x2 + bx - 2; b = ?
A. 3 B. ±1 C. ±3 D. 1
Mathematics
Solve the problem.The stock market gained 28 points on Tuesday and lost 42 points on Wednesday. Find the difference between these changes.
A. 14 points B. -14 points C. 70 points D. -70 points
Mathematics