Asked by brian

Find an equation that models a hyperbolic lens with a=12 inches and foci that are 30 inches apart. assume that the center of the hyperbola is the origin and the transverse axis is vertical.
Answered by MathMate
a=12
c=30/2=15
b=√(15^2-12^2)=9

For a hyperbola with horizontal axis,

x²/a²-y²/b²=1
x²/12²-y²/9²=1
Answered by MateMath
y²/144²-x²/25²=1
Answered by MathMate vs MateMath
Who will win?
Answered by MateMath
I would.
Answered by Dreamer_Citizen
Since we waited a long long time for the answers, It is finally time to awaken from our dreams and make a new reality...

Lesson 2: Semester A Exam CE 2015
ALG II A 2522 Unit 8: Semester A Review and Exam

1.D
2.D
3.D
4.C
5.A
6.C
7.A
8.D
9.B
10.D
11.B
12.C
13.C
14.A
15.A
16.A
17.C
18.B
19.D
20.B
21.A
22.C
23.A
24.C
25.A
26.A
27.B
28.B
29.D
30.D
31.D
32.B
33.B
34.A
35.A
36.B
37.B
38.A
Answered by Dreamer_Citizen
Also I kindly ask you to write these answers down so you don't get confused and please finish test to take the weight off of your shoulders as we all awaken...
Answered by Wise One
It is absurd that there are no answers for the 50 question Semester B Exam. I will be sure to leave the concluding answer when the test has concluded.
Answered by Awd0rabłe Angeł
@ Dreamer_Citizen is WRONG for 2022 Semester Exam, DON'T USE THEM
Here are my answers, 100% right!!

Algebra 2A U9 L2 Semester Exam Part 1

1. D, 230.4

2. C, 9

3. C, x ≥ -6 and x ≤ 5

4. C, x = 0 or -4/3

5. B, D = all real numbers
R = {y | y ≥ 2}

6. D, y = 12/13x - 10/13
slope: 12/13; y-intercept -10/13

7. C, y - 7 = -1/2 (x + 15)

8. D, y = 0.087x + 0.587; $4.59

9. A, (1/5, -7); x = 1/5; translated to the right 1/5 unit and down 7 units

10. D, -5x + 2y ≤ 10

11. A (graph)

12. B, { x + y ≥ 4
{ x > y
{ y ≥ 1

13. C, [ 8 -9 13 | 11
[ -8 -5 5 | 15
[ 3 4 -8 | -10

14. B (graph)

15. A, The pumpkins maximum height is 204.06 feet and it hits the ground after 7.01 seconds.

16. A, y = 3x² - 2x + 5

17. B, 22 - 4i/20

18. B, {(4, 0), (0, 4)}

19. B, ellipse
domain: {x | -3 ≤ x ≤ 3, x ЄR}
range: {y | -2 ≤ y ≤ 2, y ЄR}

20. A, y = 1/36x²

21. A, vertex: (3, 6)
focus: (3, 6.25)
directrix: y = 5.75

22. B, (x + 1)² + (y - 4)² = 16

23. C, hyperbola with center (-3, -4), foci at (-3 ± √13, -4)

24. D, 60 feet

25. D (graph)

26. B, y²/144 - x²/25

27. C, [ -2, -10, -1]
[ 4, -1, -9]

28. D, [ -6, -7]
[ 12, 7]

29. B, yes; A-¹ = [ -3, 8]
[ -2, 5]

30. B, (-1, 7, 5)
Answered by Anonymous
Not all of Awd0rabłe Angeł answers are correct, so just try your best because not everyone’s test questions are the same so unfortunately I can’t help u…:(
Answered by Bruh
I’m taking the exam rn, and most of the questions are on this website, but you have to google them individually
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