Find the focus and directrix of the parabola.x = 4y2
A. F: 
; D: x = 
B. F: 
; D: x = - 
C. F: 
; D: x = - 
D. F: 
; D: y = - 
Answer: B
Mathematics
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A solution contains 0.25 liters of sulfuric acid. If this represents 10% of the total amount, find the total amount.
A. 5 liters B. 4.5 liters C. 3.5 liters D. 6 liters E. 2.5 liters
Mathematics
Add.
A. 160,451 B. 801,167 C. 140,341 D. 140,351
Mathematics
Write a mathematical expression for the word phrase.Fourteen is less than eighteen
A. 14 ? 18 B. 14 < 18 C. 14 ? 18 D. 14 ? 18
Mathematics
Find the value of the determinant.
A. -54 B. 378 C. 54 D. 59
Mathematics