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Gemiola [76]
4 years ago
14

What’s 3 tenths - 1 half ?

Mathematics
1 answer:
Bogdan [553]4 years ago
5 0
Three tenths - one half is negative one fifth
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Answer:

im guessing 55 nit  sure

Step-by-step explanation:

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What is the best approximation of the length of the radius in a circle with an area of 16pi x in ^ 2 ?
Nutka1998 [239]

Answer:

4in = r

Step-by-step explanation:

Different problem if the x was a variable in the question

formula for area of circle = pi x r^2.

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If the x was a variable, you would find the square root of 16x which is \sqrt{16x} which would make it 4\sqrt{x} as the radius.

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3 years ago
Find all values of $x$ such that $\dfrac{x}{x+4} = -\dfrac{9}{x+3}$. If you find more than one value, then list your solutions i
mixer [17]

We start with

\dfrac{x}{x+4} = -\dfrac{9}{x+3}

Assuming that x \notin \{-4,\ -3\} we can cross multiply the equation:

x(x+3) = -9(x+4) \iff x^2+3x=-9x-36 \iff x^2+12x+36=0

You can recognize the perfect square pattern in the quadratic equation:

x^2+12x+36 = (x)^2 + 2\cdot x \cdot 6 + (6)^2 = (x+6)^2

So, we have

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Which is the only solution, with multiplicity 2.

8 0
4 years ago
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Answer:

Step-by-step explanation:

It takes 1/2 hours to drive from A-ville to B-town. It takes three-fifths of the time it takes to drive from A-ville to B-town to drive from B-town to C City.

To drive from B-town to C City, it will take:

1/2 * 3/5

= 3/10 hours

5 0
4 years ago
Read 2 more answers
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