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3 years ago

Which number produces an irrational number when added to 0.4?

Mathematics

1 answer:

Bingel [31]3 years ago

7 0

Answer:

Where a and b are whole numbers. π is an irrational number when it is added to 0.4 we will get an irrational number . π+0.4=3.5415... The division is not coming to end and so we ger an irrational number.

hope u find this helpful!

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Find the possible values of k if one of the roots of the quadratic equation x^2 - kx + 8 = 0 is twice the other.

kondor19780726 [428]

Answer:

$k=\pm 6$

Step-by-step explanation:

The given quadratic equation is :

$x^2 - kx + 8 = 0$

One of the roots of this equation is twice that of the other. Let the roots are $\alpha \ and\ \beta$ , $\alpha =2\beta$

Sum of roots, $\alpha +\beta =\dfrac{-b}{a}$

$\alpha +\beta =\dfrac{-(-k)}{1}\\\\\alpha +\beta =k\\\\3\beta =k\ .......(1)$

Product of roots,

$\alpha \beta =\dfrac{c}{a}\\\\2\beta ^2=\dfrac{8}{1}\\\\\beta =\pm 2$

If $\beta =\pm2$ ,

$k=3(2)\\\\=\pm 6$

So, the value of k is equal to $\pm 6$ .

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3 years ago

Evaluate (Two-fifths) cubed. Check all that apply.

Daniel [21]

Answer:

B.The expanded form is (Two-fifths) (two-fifths) (two-fifths).

E.Two-fifths)cubed = StartFraction 8 Over 125 EndFraction

5 0

3 years ago

Read 2 more answers

Determine if the equation is linear, quadratic, exponential, absolute value or other.

laiz [17]

the degree of a function is the highest power of the x value

linear means first degree

quadratic means 2nd degree

absolute value means we have the || so something like f(x)=|x|

we gots

$y=4x^2+1$

second degree

so it's quadratic

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4 years ago

In a recent study, 0.82 of Americans own a cell phone. What percent is equivalent to 0.82

HACTEHA [7]

0,82 * 100 = 82% - answer.
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8 0

3 years ago

Read 2 more answers

OK I need help on this one

Tasya [4]

We wouldn't be able to do this for you because it's referring to YOUR town, not ours. If you're in public school, I'm sure they'd have similar answers than you - so it's hard to help here.

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3 years ago