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3 years ago

Alex's dog weights 7 times as much as her cat. together the two pets weigh 72. how much does the dog weigh?

2 answers:

7 0

If the dog weighs 7 times more then the cat equals 1 part and the dog weighs 7 parts so together they equal 8 parts
so you do 72 divided by 8 = 9
then 9x7=63
the dog weighs 63 units

igor_vitrenko [27]3 years ago

3 0

The dog weigh 504 pounds

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earnstyle [38]

Answer:

The largest area enclosed is A = xy = 6 feet $\times$ 6 feet = 36 $feet^{2}$

Step-by-step explanation:

i) The perimeter of the area is 2 $\times$ (x + y) =24 ∴ x + y = 12 ∴ y = 12 - x

ii) The area of rectangle enclosed A = xy ⇒ A = x ( 12 - x) = 12x - $x^{2}$

iii) differentiating both sides of the equation in ii) we get

$\dfrac{dA}{dx} = 12 - 2x = 0$ ⇒ x = 6 feet

iv) Differentiating both sides of equation in iii) we get $\frac{d^{2}A}{dx^{2} }$ = -2

Therefore the area enclosed is maximum as the double derivative is negative

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3 years ago

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Fudgin [204]

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3 years ago

There..?

QveST [7]

The answer should be:

Domain: All real

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Range: all real

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3 0

3 years ago

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USPshnik [31]

Answer:

Step-by-step explanation:

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3 years ago

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Anuta_ua [19.1K]

Answer: 12.2474487139

Step-by-step explanation:

(I think what you wrote is just the square root of 150? if I read this wrong please let me know so I can correct my answer.)

*If you plug in the square root of 150 into a calculator, you get 12.2474487139

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3 years ago