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3 years ago

Could someone help pls

Mathematics

2 answers:

Anna007 [38]3 years ago

8 0

Answer:

40%

Step-by-step explanation:

6/15=favorable amount/total amount

6/15=2/5

2/5*20

Harman [31]3 years ago

7 0

Answer: 40%

6/15 can be simplified to 2/5. multiply by 20 on both sides to get 40/100 (40%)

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which of the following expresses the coordinates of the foci of the conic section shown below? (x-2)^2/4+(y+5)^2/9

elena55 [62]

Step-by-step explanation:

$\frac{(x - 2) {}^{2} }{4} + \frac{(y + 5) {}^{2} }{9} = 1$

This is the equation of the ellipse. Since the denominator is greater for the y values, we have a vertical ellipse. Remember a>b, so a

The formula for the foci of the vertical ellipse is

(h,k+c) and (h,k-c).

where c is

Our center (h,k) is (2, -5)

${c}^{2} = {a}^{2} - {b}^{2}$

Here a^2 is 9, b^2 is 4.

${c}^{2} = 9 - 4$

${c}^{2} = 5$

$c = \sqrt{5}$

So our foci is

$(2, - 5 + \sqrt{5} )$

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1 year ago

Find the 8th term for the sequence a(n)=6-1n

Advocard [28]

Answer:

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Step-by-step explanation:

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3 years ago

Need help asap for geometry

kupik [55]

Answer:

Step-by-step explanation:

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80=115-x

-35=-x

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4 0

3 years ago

Read 2 more answers

Will give brainliest to whoever answers both questions!! I need to turn this in soon!

Harman [31]

Answer:

y=55x

given y=385

x=gallons of gas = 385/55 = 7 gallons

inverse function

y=55x

change x to y and y to x

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inverse function is x/55

Step-by-step explanation:

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Step-by-step explanation:

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