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Masja [62]
4 years ago
7

Pls help quick <3 have a good day :D

Mathematics
1 answer:
makvit [3.9K]4 years ago
8 0

Answer:

Step-by-step explanation:

1) 20 for $1.56

The unit price is

1.56/20 = $0.078

= 7.8 cents each

2) $3.78 for 6

The unit price is

3.78/6 = 0.63

= 63 cents each

3) 2 1/2 for 1 dollars

The unit price is

1/2.5 = 0.4

= 40 cents each

4) 5 at 3.9

The unit price is

3.9/5 = 0.78

= 78 cent each

5) 1 1/2 for 1.58

The unit price is

1.58/1.5 = 1.05

= 1.05 each

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Write the standard equation of the ellipse with center at the origin, and vertices at (-4,0), (4,0), (0, -3), and (0,3).
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Answer:

  (a)  x^2/16 +y^2/9 = 1

Step-by-step explanation:

The form for the equation of an ellipse centered at the origin is ...

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The vertex values tell you the semi-x-axis is 4 units, and the semi-y-axis is 3 units. Then you have ...

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In case you don't remember that form, you can try any of the points in the equations. The equation that works will quickly become apparent.

5 0
3 years ago
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kolezko [41]
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4 0
3 years ago
Which expression shows 2x² + 18 factored completely
Lerok [7]

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3 0
3 years ago
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Rudiy27
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Answer:

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Step-by-step explanation:

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