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ohaa [14]
3 years ago
6

The sum of a whole number and twice the square of the number is 10. Find the number

Mathematics
1 answer:
amid [387]3 years ago
5 0

Answer:

Hey there !

Solution:

Let the number be x

=> x + 2x² = 10

=> 2x² + x - 10 = 0

Factorising the quadratic equation we get,

=> 2x² + 5x - 4x - 10 = 0

=> x ( 2x + 5 ) -2 ( 2x + 5 ) = 0

=> ( x - 2 ) ( 2x + 5 ) = 0

=> x = 2, -5/2

Since x is a whole number, -5 / 2 wont be applicable.

Hence x = 2.

Hence the number is 2.

Hope my answer helped !

Step-by-step explanation:

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Step-by-step explanation:

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What is 5/4, 1 8/25, and 1.3 in least to greatest
stiks02 [169]

\text{Hey there!}

\dfrac{5}{4}, 1\dfrac{8}{25}, \&\ 1.3

\text{Least}\rightarrow \text{greatest}

\dfrac{5}{4} = 1.25

1\dfrac{8}{25}=\dfrac{33}{25}= 1.32

\text{1.3 =}\dfrac{13}{10}

\text{Now, that we simplified the fraction to a decimal/ decimal to a fraction}\\\text{we can solve for the answer you're looking for!}

\boxed{\bf{Answer: \dfrac{5}{4}}\rightarrow1.3\rightarrow 1\dfrac{8}{25}}\checkmark

\text{Good luck on your assignment and enjoy your day!}

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3 years ago
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A) Independent

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Thus, this is an independent event.

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