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den301095 [7]
3 years ago
15

Find the vertex, focus, directrix, and focal width of the parabola. negative 1 divided by 40 x squared equals y

Mathematics
1 answer:
Galina-37 [17]3 years ago
5 0

Answer:

2, 8, 90, 160

that is the focal, vertex l, direction

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Which of the following rational number between 3/7 and 7/8 ?
Charra [1.4K]

Answer:

Step-by-step explanation:

There are two ways to do this. You could use your calculator to find out the decimal numbers that are equivalent to the two given fractions. Then check which one of the givens falls between these two numbers. I wouldn't do it that way -- not when you are told that the answer has 56 as the denominator.  So ...

The best way to do it is to change the two givens so that they have a denominator of 56

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7*7 / 7*8 = 49 / 46

So you need a number that is between 49 and 24

There is only one 27 / 56

6 0
3 years ago
Does the point (-1,-4) lie on the line y = 5 - X?
Arisa [49]
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Farmer Emmet used to own 2,300 acres of farmland. However, he recently sold 28% of his farm to a residential developer.
kap26 [50]

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Answer:

  1. 1656 acres left
  2. 644 acres sold
  3. $32,200,000

Step-by-step explanation:

1. The number of acres sold is ...

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Then the number of acres Emmet has left will be ...

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2. Emmet sold 644 acres.

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3. At $50,000 per acre, the value of the land sold was ...

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2 years ago
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