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3 years ago

14

Erica earn 30,000 bonus points on her computer assignment this is 10 times as many bonus points as she earned last week how many

bonus points did Erica earn last week

1 answer:

yan [13]3 years ago

3 0

She earned 3,000 last week

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identify the type of conic section that has the equation 4x^2+25y^2=100 and identify its domain and range.

Vika [28.1K]

4x^2+25y^2=100

$4x^2+25y^2=100 \\\\
Dividing \;both \;sides \;by \;100 \\\\
\frac{4x^2}{100}+ \frac{25y^2}{100}= \frac{100}{100} \\\\
\frac{x^2}{25}+ \frac{y^2}{4}= 1 \\\\
\frac{x^2}{5^2}+ \frac{y^2}{2^2}= 1 \\\\
This \;is \;an \;ellipse. \\\\ \frac{x^2}{a^2}+ \frac{y^2}{b^2}= 1$

Domain of an ellipse is x ∈ [-a,a] and Range of an ellipse is y ∈ [-b,b].

So, given equation is an Ellipse where Domain is x ∈ [-5,5] and Range is y ∈ [-2,2].

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butalik [34]

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Sorry if it’s wrong
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