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Lemur [1.5K]
2 years ago
9

What is 3 1/4 as a decimal?​

Mathematics
2 answers:
labwork [276]2 years ago
7 0

Answer:

3.25

Step-by-ste

timurjin [86]2 years ago
5 0

Answer:

3.25 :)

Step-by-step explanation:

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Dada la ecuacion 25x2 + 4y2 = 100, determina las coordenadas de los vertices, focos, las longitudes de los respectivos ejes mayo
Likurg_2 [28]

Answer:

The given equation is

25x^{2} +4y^{2}=100

Which represents an elipse.

To find its elements, we need to divide the equation by 100

\frac{25x^{2} +4y^{2} }{100} =\frac{100}{100} \\\frac{x^{2} }{4} +\frac{y^{2} }{25} =1

Where a^{2} =25 and b^{2}=4. Remember that the greatest denominator is a, and the least is b. So, we extract the square root on each equation.

a=5 and b=2.

In a elipse, we have a major axis and a minor axis. In this case, the major axis is vertical and the minor axis is horizontal, that means this is a vertical elipse.

The length of the major axis is 2a=2(5)=10.

The length of the minor axis is 2b=2(2)=4.

The vertices are (0,5);(0,-5) and (2,0);(-2,0).

Now, the main parameters of an elipse are related by

a^{2}=b^{2} +c^{2}, which we are gonna use to find c, the parameter of the focus.

c=\sqrt{a^{2}-b^{2} }=\sqrt{25-4}=\sqrt{21}

So, the coordinates of each focus are (0,\sqrt{21}) and (0,-\sqrt{21})

The eccentricity of a elipse is defined

e=\frac{c}{a}=\frac{\sqrt{21} }{5}  \approx 0.92

The latus rectum is defined

L=\frac{2b^{2} }{a}=\frac{2(4)}{5} =\frac{8}{5} \approx 1.6

Finally, the graph of the elipse is attached.

7 0
3 years ago
FREE BRAINLY!!! if you answer correctly ill give you brainly :) (40pts total)
tiny-mole [99]

c=0

Option 4 is correct

Hope it helps you

Mark me as brainliest

6 0
3 years ago
Read 2 more answers
Smallville is 104 miles east of Bigtown. Medburg is 206 miles east of Bigtown. How many miles is Medburg from Smallville?
malfutka [58]

Answer:

102 miles

Step-by-step explanation:

5 0
3 years ago
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Convert 12 m to centimeters.
DiKsa [7]

The answer to your question is "1,200 cm".

5 0
2 years ago
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The first group collected 238 cans. The second group collected 345 cans. How many cans did the two groups collect?​
True [87]

Answer:

The two groups collected 573.

Step-by-step explanation:

238

+345

=

573

8 0
3 years ago
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