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2 years ago

PLS HELP I’m in a quiz and I’m failing math and need to pass this

Mathematics

1 answer:

Zarrin [17]2 years ago

8 0

Answer:

$\sqrt{2x - 5} + 4 = x \\ \sqrt{2x - 5} = x - 4 \\ 2x - 5 = {(x - 4)}^{2} \\ 2x - 5 = {x}^{2} - 8x + 16 \\ {x}^{2} - 10x + 21 = 0 \\ {x}^{2} - 3x - 7x + 21 = 0 \\ x(x - 3) - 7(x - 3) = 0 \\ (x - 3)(x - 7) = 0 \\ \boxed{x = 3 \: or \: x = 7}$

<h2>x=3 or x=7 is the right answer.</h2>

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3 years ago

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Step-by-step explanation:

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Now, to find the weight of each animal:

Let the cat's weight be $x.$

And the kitten weight = $\frac{x}{2} -3$

Total weight of cat and kitten = 18 pounds.

Now, to set an equation to get the weight of each animal:

$(x)+(\frac{x}{2}-3)=18$

$x+\frac{x}{2} -3=18$

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Multiplying both sides by 2 we get:

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Adding both sides by 6 we get:

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Dividing both sides by 3 we get:

$x=14\ pounds.$

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Substituting the value of $x$ to get the kitten's weight:

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Therefore, the weight of cat is 14 pounds and the weight of kitten is 4 pounds.

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3 years ago

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3 years ago

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