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3 years ago

In a random sample of 50 West High School students, 14 students have a pet. If 500 students attend West

Mathematics

2 answers:

mash [69]3 years ago

7 0

I think it would be B

Korvikt [17]3 years ago

5 0

Answer:

the answer is 140

Step-by-step explanation:

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Find the vertices and foci of the hyperbola with equation quantity x plus one squared divided by sixteen minus the quantity of y

katrin2010 [14]

Answer:

The vertices are (3 , -5) , (-5 , -5)

The foci are (4 , -5) , (-6 , -5)

Step-by-step explanation:

* Lets study the equation of the hyperbola

- The standard form of the equation of a hyperbola with

center (h , k) and transverse axis parallel to the x-axis is

(x - h)²/a² - (y - k)²/b² = 1

- The length of the transverse axis is 2 a

- The coordinates of the vertices are (h ± a , k)

- The coordinates of the foci are (h ± c , k), where c² = a² + b²

- The distance between the foci is 2c

* Now lets solve the problem

- The equation of the hyperbola is (x + 1)²/16 - (y + 5)²/9 = 1

* From the equation

# a² = 16 ⇒ a = ± 4

# b² = 9 ⇒ b = ± 3

# h = -1

# k = -5

∵ The vertices are (h + a , k) , (h - a , k)

∴ The vertices are (-1 + 4 , -5) , (-1 - 4 , -5)

* The vertices are (3 , -5) , (-5 , -5)

∵ c² = a² + b²

∴ c² = 16 + 9 = 25

∴ c = ± 5

∵ The foci are (h ± c , k)

∴ The foci are (-1 + 5 , -5) , (-1 - 5 , -5)

* The foci are (4 , -5) , (-6 , -5)

4 0

3 years ago

Read 2 more answers

Franco made a dozen muffins for his party. Upon taking them out of the oven,

Naddik [55]

Answer:

Option B.

Step-by-step explanation:

This question is incomplete; find the complete question with the attachment.

Franco made number of muffins = a dozen

A dozen muffins = 12 muffins

Number of muffins were burned = 2

Remaining muffins = 12 - 2 = 10

Franco served 7 of the remaining non-burned muffins,

Fraction of muffins served = $\frac{7}{10}$

Remaining muffins = 3

Fraction of remaining muffins = $\frac{3}{10}$

Fraction of remaining non-burned muffins we can get from,

$\frac{10}{10}-\frac{7}{10}=\frac{3}{10}$

Option B is the correct equation.

7 0

3 years ago

Bryce has $28. He spends $15. Then, his mom gives him $5 more. Which equation shows how Bryce can correctly find his total amoun

photoshop1234 [79]

Answer:

28 - 15 + 5 = 18. Add and subtract will get you ,your answer. Bryce has $18

Step-by-step explanation:

Simple math hope this helped

7 0

2 years ago

Solve real word problems involving comparing and ordering integers

nydimaria [60]

What’s the problem also have a good day

6 0

3 years ago

write the vertex form quadratic equation which has a vertex at (2,-1) and psses theough the point (4,3)

andrey2020 [161]

Answer:

Step-by-step explanation:

8 0

3 years ago