Match the given graph with its equation.
A. 16x2 + 9y2 = 144
B. 9x2 - 16y2 = 144
C. 16x2 - 9y2 = 144
D. 9x2 + 16y2 = 144
Answer: A
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Find the foci of the ellipse.
+ 
= 1
A. (2, -2+ 
), (2, -2 - 
)
B. (- 
, -2), (
, -2)
C. (-2, -2), (6, -2)
D. (2 + 
, -2), (2 - 
, -2)
E = 100 V, R2 = 10 Kê, VR = 50 V and IT = 13.5 mA.
Find the value of R1 and R3 .
2
Write the word statement as an equation. Use x to represent the unknown number. Do not solve.The difference between the sum of 4 times a number and 9 and 3 times the number results in the number increased by 13.
A. (4x + 9) + 3x = x - 13 B. 4x - (9 - 3x) = x + 13 C. (4x + 9) - 3x = x + 13 D. 4(x - 9) - 3x = x - 13
Find an equation for the ellipse described. Graph the equation.Center at (-2, 5); focus at (-4, 5); contains the point (-7, 5)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1