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trasher [3.6K]
3 years ago
10

Pls help help helpppppppppppppppp

Mathematics
1 answer:
Ratling [72]3 years ago
7 0

Answer:

x = 2

Step-by-step explanation:

distribute:

8(4) - 8(x) = 7x + 2

32 - 8x = 7x + 2

add 8x to each side to get:

32 = 15x + 2

subtract 2 from each side to get:

30 = 15x

x = 30/15 or 2

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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

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

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

{c}^{2}  = 9 - 4

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

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2 years ago
Suppose a certain forest fire doubles in size every 12 hours. If the initial size of the fire was 1 acre, how many acres will th
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4 years ago
The area of a rectangle whose perimeter is a fixed 80 feet is given by A=40w - w2 , where w is the width of the rectangle. Deter
Stolb23 [73]

Answer:

Width=20 feet

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Step-by-step explanation:

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The width of the rectangle that gives the maximum area =20 feet.

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Since the length and width are equal, the special type of rectangle that produces this maximum area is a Square.

7 0
3 years ago
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