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3 years ago

Frederick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin.

Mathematics

2 answers:

belka [17]3 years ago

5 0

Answer:

the statements given above are true.

Step-by-step explanation:

Given that Frederick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin.

He spun a 4 five times.

The statements true are:

i) For the experimental outcomes to be closer to the predicted outcome, the number of trials should be increased.

iii) If the number of trials is changed, the experimental probability also changes.

iv) If the number of trials is changed, the predicted number of outcomes also changes.

v) If the number of trials is changed, the number of experimental outcomes also changes.

kotykmax [81]3 years ago

4 0

Answer:

For the experimental outcomes to be closer to the predicted outcome, the number of trials should be increased.; If the number of trials is changed, the experimental probability also changes. ; If the number of trials is changed, the predicted number of outcomes also changes. ; and If the number of trials is changed, the number of experimental outcomes also changes.

Explanation:

The more trials you perform, the closer your experimental probability will be to the theoretical probability. Thus the first statement is true and the second statement is false.

As the number of trials increases, the experimental probability changes; this is because for each trial, you will possibly have a different outcome. Thus the third statement is true.

As the number of trials increases, the predicted number of outcomes changes. This is because the predicted number will change to keep the ratio of predicted outcomes to number of trials the same. Thus the fourth statement is true.

As the number of trials increases, the number of experimental outcomes changes. This is because, as with number three, for each trial, you will possibly have a different outcome. Thus the fifth statement is true.

We cannot change the theoretical probability by performing an experiment. Thus the sixth statement is false.

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Please help, i need to raise my grade <br>solve for v

zhenek [66]

Answer:

2(s-c)/ a^2 = v

Step-by-step explanation:

s = 1/2 a^2 v+c

Subtract c from each side

s -c = 1/2 a^2 v+c-c

s-c = 1/2 a^2 v

Multiply each side by 2

2(s-c) = 2* 1/2 a^2 v

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Divide each side by a^2

2(s-c)/ a^2 = a^2 v /a^2

2(s-c)/ a^2 = v

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3 years ago

Let f = (ax + by + 4z) i + (x + cz) j + (9y + mx) k where a, b,c, and m are constants.

Tom [10]

Let $\mathcal R$ be an arbitrary closed region with boundary the surface $\mathcal S$ . By the divergence theorem,

$\displaysytle\iint_{\mathcal S}\mathbf f(x,y,z)\cdot\mathrm d\mathbf S=\iiint_{\mathcal R}\nabla\cdot\mathbf f(x,y,z)\,\mathrm dV$

We have

$\nabla\cdot\mathbf f(x,y,z)=\dfrac{\partial(ax+by+4z)}{\partial x}+\dfrac{\partial(x+cz)}{\partial y}+\dfrac{\partial(9y+mx)}{\partial z}=a$

so that the flux satisfies

$\displaystyle a\iiint_{\mathcal R}\mathrm dV=0$

We're assuming $\mathcal R$ is a closed region, and the integral above is its volume, which must be positive. This means we must have $a=0$ .

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3 years ago

Jake says that<br> 3/5 - 1/2 = 2/3<br> which is incorrect. What is his mistake

slega [8]

It appears Jake said 5-2 = 3 for the denominator portions. This is not correct. In order to subtract fractions, the denominators must be the same and they stay the same the entire time. Only the numerators (aka stuff up top) are being subtracted.

Currently 3/5 - 1/2 cannot be subtracted since the 5 and 2 are different denominators. But we can say this:

3/5 = 6/10

1/2 = 5/10

and then from there, we can say:

3/5 - 1/2 = 6/10 - 5/10 = (6-5)/10 = 1/10

So in short,

3/5 - 1/2 = 1/10

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3 years ago

Factor x3 – 7x2 – 5x 35 by grouping. what is the resulting expression? (x2 – 7)(x – 5) (x2 – 7)(x 5) (x2 – 5)(x – 7) (x2 5)(x –

mars1129 [50]

The factored expression ofx^3 - 7x^2 -5x +35 is (x^2 - 5)(x - 7)

<h3>What is an expression?</h3>

An expression is an algebraic term used for a mathematical statement that includes addition subtraction multiplication and division

x^3 – 7x^2 – 5x + 35

factor the given equation

x^2(x – 7) – 5(x - 7)

Factor out x - 7

(x^2 - 5)(x - 7)

Therefore, the factored expression is (x^2 - 5)(x - 7)

To learn more about the factored expression visit:

brainly.com/question/723406

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2 years ago

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lana [24]

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If you are increasing each side by a factor of x, you are multiplying the original by $x^{3}$

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3 years ago

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