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AURORKA [14]
2 years ago
12

HELP ME 100 POINTS PLEASE BRAINIEST IF CORRECT!!!!!

Mathematics
2 answers:
scZoUnD [109]2 years ago
8 0

Answer:

B is the correct answer

Step-by-step explanation:

The graph for B shows how high and low the child is swinging and the rest of the graphs show something else. Hope this helps.

Hitman42 [59]2 years ago
6 0

Answer:

B

Step-by-step explanation:

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Two times the sum of nine and a number is the opposite of 9.
marshall27 [118]
18 that question is confusing so I guessed sorry dude
8 0
3 years ago
The variables x and y have a proportional relationship, and y=5/6 when x=3/4. Which equation represents this relationship?
seropon [69]

Answer:

y = 1 1/9

BRO MAKE ME THE BRAINLIEST PLS

4 0
2 years ago
Find the vertices and foci of the hyperbola with equation quantity x plus 1 squared divided by 225 minus the quantity of y plus
Lera25 [3.4K]

Answer:

The vertices are (-16,-5) and (14,-5)

The foci are (-26,-5) and (24,-5)

Please, see the attached file.

Thanks.

7 0
3 years ago
Read 2 more answers
A system for tracking ships indicated that a ship lies on a hyperbolic path described by 5x2 - y2 = 20. the process is repeated
zysi [14]
Answer:
The ship is located at (3,5)

Explanation:
In the first test, the equation of the position was:
5x² - y² = 20 ...........> equation I
In the second test, the equation of the position was:
y² - 2x² = 7 ..............> equation II
This equation can be rewritten as:
y² = 2x² + 7 ............> equation III

Since the ship did not move in the duration between the two tests, therefore, the position of the ship is the same in the two tests which means that:
equation I = equation II

To get the position of the ship, we will simply need to solve equation I and equation II simultaneously and get their solution.

Substitute with equation III in equation I to solve for x as follows:
5x²-y² = 20
5x² - (2x²+7) = 20
5x² - 2y² - 7 = 20
3x² = 27
x² = 9
x = <span>± </span>√9

We are given that the ship lies in the first quadrant. This means that both its x and y coordinates are positive. This means that:
x = √9 = 3

Substitute with x in equation III to get y as follows:
y² = 2x² + 7
y² = 2(3)² + 7
y = 18 + 7
y = 25
y = +√25
y = 5

Based on the above, the position of the ship is (3,5).

Hope this helps :)
8 0
3 years ago
Write the equation in slope-intercept form show all your work<br> 3x + 7 = 9
jeka57 [31]
3x=2
x= 2/3

slope is undefined. there is no y intercept
3 0
3 years ago
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