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3 years ago

Garth estimated the height of the door to his classroom in meters. What is a reasonable estimate ?

1 answer:

8 0

Hello! I would love to help!

Doors vary in size, but the standard door height is about 6 feet.

We know that there are about 3 feet per meter, so let's divide our door's height in feet by 3.

6/3=2

So, I would say about 2 meters would be a good estimate!

Hope this helped! Comment if you have questions!

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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

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

and

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

6 0

1 year ago

Which values are solutions to the inequality below? Check all that apply <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7Bx%7D%20"

MaRussiya [10]

X > 169 is your Answer thus: b:/d & f:

5 0

3 years ago

A coffee shop needs to purchase custom cups. Company C charges a flat fee of $155 plus $15 perrl cup. Company D does not have a

bezimeni [28]

Answer:

11 cups

Step-by-step explanation:

Not really a method just started at 10 and then realised deal d was better so go up by one so 11 and c worked out better as I timed 30 by 11 and 15 by 1 + the flat fee.

8 0

3 years ago

WILL GIVE BRAINLIEST! PLEASE HELP ASAP!

aleksandr82 [10.1K]

Answer:

Step-by-step explanation:

Evaluate using

PEMDAS

First we do what is inside of the Parenthesis 12 - 9 = 3

Now we have 2 + 3²

Next is Exponents 3² = 9

Now we have 2 + 9

there is no multiplication or division needed so we go straight to addition

9 + 2 = 11

So we can conclude that the answer is 11

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2 years ago

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Temka [501]

A because its twice bigger than the real one

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3 years ago

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