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Rashid [163]
3 years ago
6

How to solve this |9x-12|<-4

Mathematics
1 answer:
Neporo4naja [7]3 years ago
5 0
<span> |9x-12|  <  -4

There is no solution for this inequality...

Because an absolute value is NEVER less than an a negative number </span>
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Solve for x in the parallelogram
vladimir1956 [14]

Answer:

x = 25

Step-by-step explanation:

total interior angles in 360

4x - 20 + 100 = 180

4x = 100

x = 25

8 0
2 years ago
What is the probability that a randomly selected member of a normally distributed population will lie more than 1.8 standard dev
Helen [10]

Answer:

P(X> \mu +1.8\sigma)=P(\frac{X-\mu}{\sigma}>\frac{\mu +1.8\sigma-\mu}{\sigma})=P(Z>1.8)

And we can find this probability using the complement rule:

P(z>1.8)=1-P(z

And using the normal standard distirbution table or excel we got:

P(z>1.8)=1-P(z

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 if interest of a population, and for this case we know the distribution for X is given by:

X \sim N(\mu,\sigma)  

We are interested on this probability

P(X>\mu +1.8 \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}

If we apply this formula to our probability we got this:

P(X> \mu +1.8\sigma)=P(\frac{X-\mu}{\sigma}>\frac{\mu +1.8\sigma-\mu}{\sigma})=P(Z>1.8)

And we can find this probability using the complement rule:

P(z>1.8)=1-P(z

And using the normal standard distirbution table or excel we got:

P(z>1.8)=1-P(z

5 0
3 years ago
The value of zlatans house has increased by 7% His house is now valued at ?749,000 Work out the value of the house before the in
wolverine [178]

Answer:

$440588.24

Step-by-step explanation:

Let x be the value of Zlatans house before the increase.

We are told that the value of Zlatans house has increased by 7%. His house is now valued at $749,000. This means that value of house(x) before increase plus 7% of x will be equal to $749000.

We can set this information in an equation as:  

x+\frac{70}{100}x=74900

x+0.7x=74900

Upon combining like terms we will get,

(1+0.7)x=74900      

1.7x=74900  

x=\frac{749000}{1.7}    

x=440588.2352941176470588\approx 440588.24      

Therefore, the value of the house before increase will be $440588.24.

4 0
3 years ago
WILL GIVE BRAINLIEST ANSWER TO WHOEVER IS ABLE TO FULLY AND CORRECTLY ANSWER THIS QUESTION. Consider and trapezoid in the follow
FinnZ [79.3K]

This is an isosceles trapezoid, because the two angles are supplementary on the right side.

y is 25 based on the Pythagorean theorem

w is sqrt (850)=29.15

z must be 15

Making a right triangle to look at the altitude

cos 59=a/15, so a is 7.73 between the right corner and the edge of x

 

That means x is 29.15-2(7.73)=13.69

=============

The median should be half way between 13.69 and 29.15

That is half their sum, or half of 42.84 or 21.42

That doesn't change the answer above

Once I know the trapezoid is isosceles, the angles at the base have to be 59d and the angles at the top 121d.

please mark brainliest!

7 0
3 years ago
To simplify the expression 3+5×3-8÷4​
oee [108]

Answer:

5x3

Step-by-step explanation:

this is the first step

5 0
3 years ago
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