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Talja [164]
3 years ago
12

How do you begin isolating the variable x to one side of the equation?

Mathematics
1 answer:
diamong [38]3 years ago
6 0
You move all the varibles to one side and then divide it by the number it has remember if you do it for one side you do it to the other

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Can someone help me with this x+5=13 ​
kkurt [141]

Answer:

8

Step-by-step explanation:

3 0
3 years ago
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A woman is randomly selected from the 18–24 age group. For women of this group, systolic blood pressures (in mm Hg) are normally
Naddik [55]

Answer:

X \sim N(114.8,13.1)  

Where \mu=114.8 and \sigma=13.1

We are interested on this probability

P(X>140)

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:

And we can find this probability using the complement rule:

P(z>1.924)=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 of interest of a population, and for this case we know the distribution for X is given by:

X \sim N(114.8,13.1)  

Where \mu=114.8 and \sigma=13.1

We are interested on this probability

P(X>140)

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>140)=P(\frac{X-\mu}{\sigma}>\frac{140-\mu}{\sigma})=P(Z>\frac{140- 1114.8}{2.6})=P(z>1.924)And we can find this probability using the complement rule:

P(z>1.924)=1-P(z

8 0
3 years ago
Why am this point be labeled with two names; 1 1/2 and 3/2
kakasveta [241]
3/2 is an improper fraction, where the denominator (bottom number) is smaller than the top (numerator)
1  1/2 is this same fraction but now it is not improper.  
5 0
2 years ago
If a is an integer, when is a/b always equal to an integer?
White raven [17]
A must be equal to b or be a multiple of b or -b in order to be an integer

example   5/5 is an integer (1)
                60/5 is an integer (12) because 60 is a multiple of 5
                -30/5  is an integer (-6) because -30 is a multiple of -5
4 0
2 years ago
Read 2 more answers
What is the equation of the line –3x – 2y = 30 in slope-intercept form?
leonid [27]
-3x-2y=30
-2y=3x+30
y=-3/2x-15



the answer is y=-3/2x-15
4 0
3 years ago
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