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icang [17]
3 years ago
5

Error Analysis: Describe the error in the way the difference of the two polynomials is set up and/or

Mathematics
1 answer:
maria [59]3 years ago
6 0

Answer:

  The distributive property is not properly applied to the second polynomial.

Step-by-step explanation:

For whatever reason, it is a common mistake to say that ...

  -(a +b +c) = -a +b +c . . . . WRONG!

Rather, it should be ...

  -(a +b +c) = -a -b -c . . . . CORRECT

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In a bag, there are 15 tickets bearing the numbers 1 to 15. One ticket is drawn at
Liono4ka [1.6K]

Answer:

1 in 5

Step-by-step explanation:

Multiples of 3 from 1 to 15:

3, 6, 9, 12, 15

Find the lowest multiple of 3.

Formula for probability:

Probability number is drawn/total

3/15

Convert it to simplest form.

1/5

I am not so sure about this, but I have seen people do this, hope I'm not wrong.

8 0
3 years ago
geometry please help me thank you
irinina [24]

Answer: For first blank: GNS

P = N G = P S = R

8 0
3 years ago
You roll a six-sided die twice. What is the probability of rolling an even number and then an odd number? A) 1/4 B) 1/6 C)1/9 D)
Leno4ka [110]

Answer:

B) 1/6

Step-by-step explanation:

If you roll a six-sided die twice the two times you roll you have a chance of getting an odd number the first time and an even number the second time.

Than would look like 2/12.

2/12 simplified is equal to 1/6.

So,this means the answer is 1/6.

Hope this helps!

7 0
3 years ago
Read 2 more answers
Which are correct represntions of the inequality -3(2x-5)<5(2-x)
ziro4ka [17]

Answer:

Hence x > 5.

Step-by-step explanation:

Given:-

- 3(2 x -5) < 5(2-x)

<em>-6 x + 15 < 10 - 5 x</em>

<em>15 - 10 < 6 x - 5 x</em>

<em>5 < x</em>

<em>x > 5</em>

8 0
3 years ago
A sample of size 45 will be drawn from a population with mean 53 and standard deviation 11. Use the TI-84 Plus calculator. (a) I
sukhopar [10]

Answer:

a) We have the standard deviation and the mean, so it is appropriate to use the normal distribution to find probabilities for x.

b) There is a 15.97% probability that x will be between 54 and 55.

c) The 47th percentile of x is X = 52.877.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by

Z = \frac{X - \mu}{\sigma}

After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.

A sample of size 45 will be drawn from a population with mean 53 and standard deviation 11.

This means that \mu = 53.

We have to find the standard deviation of the sample, that is:

\sigma = \frac{11}{\sqrt{45}} = 1.64

(a) Is it appropriate to use the normal distribution to find probabilities for x?

We have the standard deviation and the mean, so it is appropriate to use the normal distribution to find probabilities for x.

(b) Find the probability that x will be between 54 and 55.

This is the pvalue of the Z score when X = 55 subtracted by the pvalue of the Z score when X = 54.

X = 55

Z = \frac{X - \mu}{\sigma}

Z = \frac{55 - 53}{1.64}

Z = 1.22

Z = 1.22 has a pvalue of 0.88877.

X = 54

Z = \frac{X - \mu}{\sigma}

Z = \frac{54 - 53}{1.64}

Z = 0.61

Z = 0.61 has a pvalue of 0.72907.

So, there is a 0.88877 - 0.72907 = 0.1597 = 15.97% probability that x will be between 54 and 55.

(c) Find the 47th percentile of x. Round the answer to at least two decimal places.

This is the value of X when Z has a pvalue of 0.47;

This is between Z = -0.07 and Z = -0.08. So we use Z = -0.075.

Z = \frac{X - \mu}{\sigma}

-0.075 = \frac{X - 53}{1.64}

X = 52.877

The 47th percentile of x is X = 52.877.

8 0
3 years ago
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