Find the exact solutions of the given equation in the interval [0, 2?).
?
A. ?
B. ?
C. ?
D. ?x = 0
E. ?
Answer: C
Mathematics
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Solve the problem.Helen Weller invested $13,000 in an account that pays 11% APR. How much additional money must be invested in an account that pays an APR of 14% so that the total interest is equal to the interest on the two investments at the rate of 12%?
A. $13,000 B. $9,000 C. $6,500 D. $10,000
Mathematics
Find P(18 ? x ? 21) given that the distribution for x is Normal (20, 2.5).
What will be an ideal response?
Mathematics
Solve the problem.The temperature at 5:00 was -5° C. Four hours later, it was -14° C. What was the change in temperature?
A. -9° C B. 9° C C. 19° C D. -19° C
Mathematics
Add. Find the LCD first.
+ 
A. 
B. 
C. 
D. 
Mathematics