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3 years ago

Ryan bought a calculator for $200 he resold it and made a profit of 25% how much did he sell the calculator for?

Mathematics

1 answer:

vladimir1956 [14]3 years ago

5 0

He sold the calculator for $250

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Which equation represents the hyperbola in general form?

valina [46]

ANSWER

$9 {y}^{2} - 4 {x}^{2}- 36y + 16x - 16 = 0$

EXPLANATION

The standard equation of the hyperbola is

$\frac{ {(y - 2)}^{2} }{4} - \frac{ {(x - 2)}^{2} }{9} = 1$

We multiply through by 36 to obtain:

$9 {(y - 2)}^{2} - 4( {x - 2)}^{2} = 36$

We now expand to get,

$9( {y}^{2} - 4y + 4) - 4( {x}^{2} - 4x + 4) = 36$

Expand :

$9 {y}^{2} - 36y + 36 - 4 {x}^{2} + 16x - 16 = 36$

To get the general form, we equate everything to zero to get,

$9 {y}^{2} - 4 {x}^{2}- 36y + 16x - 16 = 0$

The correct choice is D.

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3 years ago

Can someone help me please

zavuch27 [327]

Answer:

$\: \\ diameter = 4ft \\ \: raduis \: = \frac{diameter}{2} \\ raduis = \frac{4ft}{2} = 2ft \\ c = 2\pi \: r \\ c = 2\pi2ft \\ c = 4\pi \: ft \\ c = 4 \times 3.14 = 12.56ft$

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2 years ago

Isabella worked 50 hours over the past two weeks, and she gets paid by the hour. During the first week of the two-week span, she

sammy [17]

Isabella earns $9.50 per hour. She would've earned $475 for the entire 50 hours.

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3 years ago

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What is the answer to 35=-7=[z+8]

Ronch [10]

I believe you mean to put "()" not "[]"
I got z = -8 as my answer

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2 years ago

A function is shown in the table.

Anna71 [15]

Given:
x g(x)
−3 17
−1 −3
0 −4
2 13

The true statement for the given function is:
The function is decreasing from x = −3 to x = −1.

As you can see, when x = -3 the corresponding value of the function is 17 but when x = -1 the corresponding value is -3. There is a decrease of 20. → 17 - 20 = -3

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2 years ago

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