Solve the system by the substitution method.
A. (1, 0), (-1, 0)
B. (1, 0)
C. (-1, 0)
D. ?
Answer: B
Mathematics
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Perform the indicated operation without the use of a calculator and express each answer in decimal notation.
A. 0.00142857 B. 700 C. 100 D. 0.07
Mathematics
Find the quantities indicated without using the Pythagorean Theorem. (Round the sides to the nearest tenth if necessary.)
(a) U = ____(b) q = ____
A. (a) U = 90°, (b) q = 50 cm B. (a) U = 90°, (b) q = 100 cm C. (a) U = 45°, (b) q = 25 cm D. (a) U = 45°, (b) q = 50 cm
Mathematics
Perform the indicated operation. Write the result in the form a + bi.(- 
- 
i) + (
+ 
i)
A. 1 - 
i
B. 
+ 0i
C. - 
+ 2i
D. 
+ i
Mathematics
Write the decimal as a percent.9.9
A. 99% B. 990% C. 0.99% D. 0.0099%
Mathematics