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2 years ago

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Evaluate 21 ÷ 3 + (8 -2 ÷2) show work

1 answer:

san4es73 [151]2 years ago

7 0

Answer:

$21 \div 3 + (8 - 2 \div 2) \\ = 21 \div 3 + (8 - 1) \\ = 21 \div 3 + 7 \\ = 7 + 7 \\ = 14$

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この質問は緒と面白いね

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頑張ってね！

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Which of the following describes what happens when you change the a value in the equation shown below?

Over [174]

I will say that it is C

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3 years ago

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

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Which represents an elipse.

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

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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.

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

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The latus rectum is defined

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Finally, the graph of the elipse is attached.

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goldenfox [79]

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