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Vlada [557]
3 years ago
13

Which of the following linear expressions CANNOT be factored?

Mathematics
2 answers:
Rzqust [24]3 years ago
7 0

It's really easy lol the answer is A) 15x+22

Yuri [45]3 years ago
5 0

your answer is A) 15x+22

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Which value is a solution of the equation 8y=56?
Korvikt [17]

Answer:

7

Step-by-step explanation:

If you divide 8y / 8  then you have to do the same thing to 56. When you do, y  = 7

3 0
3 years ago
8x= -14 Give your answer as an improper fraction in its simplest form. please help its due now! AWARD = BRAINLIEST!!!
Mrrafil [7]

Answer:

x= -7/4

Step-by-step explanation:

8x= -14

Divide both sides by 8

8x/8 = -14/8

Simplify

x= -7/4

6 0
3 years ago
Read 2 more answers
if graphed in the coordinate plane, would the line y=5x-2 pass through the point (4, 15)? Explain how you arrived at your answer
brilliants [131]

Answer:

No

Step-by-step explanation:

If the line did pass through that point, then plugging in the point to the equation would be true. But when you plug in 4 for x, the y would be 18, not 15.

7 0
3 years ago
Using only addition, and subtraction and just 3 operation signs, write an expression that equals 100 using the digits shown. Do
lapo4ka [179]
123 - 45 + (-67) + 89 is the answer.

Hope this helped☺☺

(I had this before. It took me 30 minutes to find the answer, and didn't you ask this before?)
8 0
3 years ago
Read 2 more answers
For a normal distribution, is it likely that a data value selected at random is more than 2 standard deviations above the mean?
makkiz [27]

Answer:

P(X>\mu + 2\sigma)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

Using the z score formula we want this probability:

P(Z>2)

And using the complement rule we got:

P(Z>2) = 1-P(Z

And that correspond to only 0.023*100= 2.3%, so is not frequently and the most appropiate answer for this case would be:

No. This event happens only 2.5% of the time

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the variable of interst of a population, and for this case we know the distribution for X is given by:

X \sim N(\mu,\sigma)  

Where \mu the mean and \sigma  the deviation

We are interested on this probability

P(X>\mu + 2\sigma)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

Using the z score formula we want this probability:

P(Z>2)

And using the complement rule we got:

P(Z>2) = 1-P(Z

And that correspond to only 0.023*100= 2.3%, so is not frequently and the most appropiate answer for this case would be:

No. This event happens only 2.5% of the time

8 0
3 years ago
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