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2 years ago

What is 12/25 as a percent? (Step by step) Sorry I don’t pay attention :p

Mathematics

2 answers:

ikadub [295]2 years ago

8 0

Answer:

48%

Step-by-step explanation:

explanation in picture

kiruha [24]2 years ago

5 0

12/25 as a percentage is 48%

So, since our denominator in 12/25 is 25, we could adjust the fraction to make the denominator 100. To do that, we divide 100 by the denominator: Now we can see that our fraction is 48/100, which means that 12/25 as a percentage is 48%. Once we have the answer to that division, we can multiply the answer by 100 to make it a percentage: And there you have it! Two different ways to convert 12/25 to a percentage. Both are pretty straightforward and easy to do, but I personally prefer the convert to decimal method as it takes less steps.

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What is an estimation strategy<br> This is for 6th grade math please help

Lunna [17]

Answer:

Estimation is a mental process of coming up with an answer that is relatively close, to allow decisions to be made. The types of estimation are quantity, computation and measurement.

An estimation strategy is simply coming up with a good estimate based on evidence and already known facts. Coming to a conclusion as close to the real answer as you can. It can also be called an educated guess.

8 0

3 years ago

Factor completely. <br> <img src="https://tex.z-dn.net/?f=x%5E%7B8%7D-%5Cfrac%7B1%7D%7B81%7D" id="TexFormula1" title="x^{8}-\fra

Eduardwww [97]

We have 3⁴ = 81, so we can factorize this as a difference of squares twice:

$x^8 - \dfrac1{81} = \left(x^2\right)^4 - \left(\dfrac13\right)^4 \\\\ x^8 - \dfrac1{81} = \left(\left(x^2\right)^2 - \left(\dfrac13\right)^2\right) \left(\left(x^2\right)^2 + \left(\dfrac13\right)^2\right) \\\\ x^8 - \dfrac1{81} = \left(x^2 - \dfrac13\right) \left(x^2 + \dfrac13\right) \left(\left(x^2\right)^2 + \left(\dfrac13\right)^2\right) \\\\ x^8 - \dfrac1{81} = \left(x^2 - \dfrac13\right) \left(x^2 + \dfrac13\right) \left(x^4 + \dfrac19\right)$

Depending on the precise definition of "completely" in this context, you can go a bit further and factorize $x^2-\frac13$ as yet another difference of squares:

$x^2 - \dfrac13 = x^2 - \left(\dfrac1{\sqrt3}\right)^2 = \left(x-\dfrac1{\sqrt3}\right)\left(x+\dfrac1{\sqrt3}\right)$

And if you're working over the field of complex numbers, you can go even further. For instance,

$x^4 + \dfrac19 = \left(x^2\right)^2 - \left(i\dfrac13\right)^2 = \left(x^2 - i\dfrac13\right) \left(x^2 + i\dfrac13\right)$

But I think you'd be fine stopping at the first result,

$x^8 - \dfrac1{81} = \boxed{\left(x^2 - \dfrac13\right) \left(x^2 + \dfrac13\right) \left(x^4 + \dfrac19\right)}$

6 0

2 years ago

Solve the system: x' = (2 4 -1 6)x

sertanlavr [38]

Answer:

$x=e^{8t}+c$

Step-by-step explanation:

we have given x'=(24-16)x=8x

x' denotes the differenation

$\frac{dx}{dt}=8x$ differentiation is performed with respect to t

by variable separable method we can write

$\frac{dx}{x}=8dt$

on integrating both side

$lnx=8t+c$

$x=e^{8t}+c$ (property of log )

so the solution for x will be $x=e^{8t}+c$

6 0

3 years ago

A fair coin is continually flipped until heads appears for the 10th time. Let X denote the number of tails that occur. Compute t

Ierofanga [76]

Answer:

The probability mass function is expressed as:

P(x) = [(x+r-1)C(r-1)]*[p^r]*[(1-p)^x]

Step-by-step explanation:

This is not a binomial distribution. It is actually a negative binomial distribution. The probability mass function is expressed below:

P(x) = [(x+r-1)C(r-1)]*[p^r]*[(1-p)^x]

where:

x = number of failures

r-1 = number of successes (10 in this scenario)

p = probability of a success

nCr = n!/[r!(n-r)!]

The main formula difference in the positive binomial versus negative binomial is this: With respect to the negative binomial, it is obviously known that the last event will be: when we reach our 10th "head", we stop .

Thus, the last flip will ALWAYS be a "head".

5 0

2 years ago

Which equation represents y=x^2-10x+30 in vertex form?

drek231 [11]

We are given parabola equation y=x^2-10x+30.

We need to convert it in vertex form y= a(x-h)^2+k.

We need to find the value of a, h and k to get the vertex form.

For the given equation y=x^2-10x+30, the coefficient of x^2 is 1.

Therefore, a=1.

Now, let us find values of h and k.

h = -b/2a.

h = -(-10)/2(1) = 5.

Plugging x=5 in given equation to get the value of k.

y= x^2-10x+30 => (5)^2 -10(5) +30 = 25 -50 +30 = 5.

Therefore, k =5.

Therefore, vertex (h,k) = (5,5).

<h3>So, the vertex form is </h3>

$y=(x-5)^2+5$

6 0

3 years ago