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elena55 [62]
1 year ago
8

What is the standard form equation of an ellipse that has vertices (−2,−18) and (−2,8) and foci (−2,−14) and (−2,4)?

Mathematics
1 answer:
sveta [45]1 year ago
3 0

Answer:

Hello,

Step-by-step explanation:

All is in the picture.

B=(-2,8), O=(-2,-5)

b=BO=8+5=13

F_1=(-2,4)   O=(-2,5)  Focus distance=4+5=9
Horizontal half axis=√(b²-f²)=√88

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Anastaziya [24]

Answer:

h= (V/πr²)(3)

Step-by-step explanation:

6 0
3 years ago
Find the number, if 5/7 of it is 15
Karolina [17]
Hey there! :D

Divide 15 by the numerator so we can find 1/7.

15/5= 3

3*7= 21

The number is 21. 

I hope this helps!
~kaikers
7 0
2 years ago
Read 2 more answers
Hello hope your day is well i really need help with this expand question 4(a+5)-2(a-5)
BARSIC [14]

Answer:

2a + 30

Step-by-step explanation:

break it down so it is 4(a+5)

then work out -2(a-5)

so 4 x a then 4 x 5 which gives 4a + 20

then -2 x a then -2 x -5 which gives -2a + 10

then when you have 4a + 20 -2a + 10

do 4a - 2a which is 2a

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so the answer comes to 2a + 30

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6 0
2 years ago
Read 2 more answers
Mr. Santiago can buy light fixtures in packages of 12 and light bulbs in packages of 9. He bought the fewest number of light fix
liq [111]

Answer:

  • 3 and 4 packages

Step-by-step explanation:

We need to find the LCM of 12 and 9.

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<u>Their LCM is:</u>

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6 0
2 years ago
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Helppppo please due tomorrow
otez555 [7]

Answer:

Answer B:  10.12

Step-by-step explanation:

Let the numbers be represented by a, b and c.  Their sum is 44.84.  The number a is 24.6.  Further, assume that b = c.

Then 24.6 + b + b = 44.84.

Let's isolate 2b:

Subtract 24.6 from both sides of this equation, obtaining:

2b = 20.24.

Finally, divide both sides of this equation by 2.  We get b = 10.12.

This corresponds with Answer B.

5 0
2 years ago
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