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3 years ago

What is the discriminant of 9x^2+2=10x^2

Mathematics

1 answer:

Tcecarenko [31]3 years ago

3 0

Answer:

Step-by-step explanation:

To find the discriminant, we need to get the equation in standard form

9x^2+2=10x^2

Subtract 10x^2 from each side

9x^2-10x^2+2=10x^2-10x^2

-x^2 +2 =0

This is in the form ax^2+bx +c =0

where a=-1 b=0 and c=2

The discriminant is

b^2 -4ac

0^2 -4*(-1)*2

0+8

The discriminant is 8

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Solve the proportion of 16/50=x/156.25

svetlana [45]

Answer:

The value of x is 50 and proportion equation form becomes $\frac{16}{50} = \frac{50}{156.25}$ .

Step-by-step explanation:

As the proportion given in the question be as follows

$\frac{16}{50} = \frac{x}{156.25}$

Solving the above

$\frac{16}{50} = \frac{x}{156.25}$

$\frac{16\times 156.25}{50} =x$

$\frac{2500}{50} =x$

x = 50

Therefore the value of x is 50 and proportion equation form becomes $\frac{16}{50} = \frac{50}{156.25}$ .

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Natasha2012 [34]

Answer:B

Step-by-step explanation:

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3 years ago

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Which expressions are equivalent to the given sort 40 (there is more than one and the one selected is correct)

Basile [38]

Answer:

$40 {}^{ \frac{1}{2} }$

Step-by-step explanation:

The last one is also the answer

Using the rational exponet rule,

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Using this number,

$\sqrt{40}$

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so our numerator is 1 so

$40 {}^{ \frac{1}{2} }$

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