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Paul [167]
3 years ago
13

Please help me I

id="TexFormula1" title=" {x}^{2} - {y}^{2} + 4y - 4" alt=" {x}^{2} - {y}^{2} + 4y - 4" align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
maksim [4K]3 years ago
6 0

Answer:

hope it's was helpful to you

Ivenika [448]3 years ago
4 0

Answer:

{x}^{2}  -  {y}^{2}  + 4y - 4 \\  \\  {x}^{2}  - ( {y}^{2} .2.y.y +  {2}^{2} ) \\  \\  {x}^{2}  - (y - 2) {}^{2}  \\  \\ (x + y - 2)(x - y + 2)

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A designer wants to create a whisper chamber in the shape of an ellipse. He has a warehouse space with a longest length of 50 ya
Zanzabum

Answer:

22.9 yards

Step-by-step explanation:

Since b² = a² - c² where a = vertex of major axis, 2a = 50 yards the length of the major axis. So , a = 50/2 = 25 yards. c = focus of chamber = 10 yards from center and b = vertex of minor axis.

So, b = ±√(a² - c²)

= ±√(25² - 10²)

= ±√(625 - 100)

= ±√525

= ±22.91 yards

≅ ± 22.9 yards

Since b = length of minor axis from center of chamber = 22.91 yards. So, he should build the whisper chamber 22.9 yards out from the center of the chamber.

7 0
3 years ago
What is the geometric definition of a circle
Mazyrski [523]

Answer:

See explanation

Step-by-step explanation:

A circle is a figure where all of the points on its graph are equidistant from a single, central point. You can define a circle in a plane with the formula (x-h)^2+(y-k)^2=r^2, where h represents the x coordinate of the center, k represents the y coordinate, and r represents the radius. Hope this helps, and feel free to ask for more clarification!

3 0
2 years ago
Read 2 more answers
Naomi has 50 red beads and white beads. The number of red beads is 1 more than 6 times the number of white beads. How Many red b
Tanya [424]
This is confusing for me
5 0
3 years ago
3(x-5)=9 i don't know what to do
Dafna1 [17]

Answer:

x=8

Step-by-step explanation:

3(x-5)=9

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8 0
2 years ago
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20 feet. The builder asks him to give the measurements in yards. What will be the length in yards?Immersive Reader
Sedaia [141]

Answer:

6.67 yards

Step-by-step explanation:

20 feet. The builder asks him to give the measurements in yards. What will be the length in yards?

Please note that:

1 foot = 0.333 yard

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Cross Multiply

1 foot × x yards = 20 feet × 0.333 yards

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Therefore, the measurements in yards is 6.67 yards.

7 0
2 years ago
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