Determine whether the following is a proportion.
= 
A. Yes
B. No
Answer: A
Mathematics
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Simplify by rationalizing the denominator. Write your answer in a + bi form.
A. 
- 
i
B. 18 + 1i
C. 
+ 
i
D. 
- 
i
Mathematics
Add or subtract as indicated.
+ 
A. 
B. 
C. 
D. 7
Mathematics
Find the unknown coordinate so that the ordered pair satisfies the given equation.3x + 4y = 28, ( ? , 4)
A. -4 B. 14 C. -14 D. 4
Mathematics
Perform the conversion. Round to the nearest tenth when necessary.81.1 gal to L
A. 307.4 L B. 86.0 L C. 21.4 L D. 76.7 L
Mathematics