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oksano4ka [1.4K]
3 years ago
13

It snowed x inches in the morning and 5 more in the afternoon. The total

Mathematics
1 answer:
DIA [1.3K]3 years ago
5 0
X=6 i think , there is no question so
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Triangle ABC has vertices of A(–8 ,8), B(6, 2), and C(–2, 1). Find the length of the median from C in triangle ABC
babunello [35]
The length of the median from vertex C is equal to √17.  As a median of a triangle is a line segment joining a single vertex to the midpoint of the opposite side of the triangle. In this case, the median will be from vertex C to the mid-point of the triangles side AB.<span> Thus, we can work out the length of the median from vertex C by using the Midpoint formula; M(AB) = (X</span>∨1 + X∨2) /2 ; (Y∨1 + Y∨2) /2 . Giving us the points of the midpoint of side AB, which can be plotted on the cartesian plane. to find the length of the median from vertex C, we can use the distance formula and the coordinates of the midpoint and vertex C , d = √(X∨2 - X∨1) ∧2 + (Y∨2 - Y∨1)∧2. 
4 0
3 years ago
If the distribution is really N ( 5.43 , 0.54 ) , N(5.43,0.54), what proportion of observations would be less than 5.05 ? 5.05?
Ipatiy [6.2K]

Answer:

P(X

And we can use the following excel code to find the answer: "=NORM.DIST(-0.704,0,1,TRUE)"

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

X \sim N(5.43,0.54)  

Where \mu=5.43 and \sigma=0.54

We are interested on this probability

P(X

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

And we can find this probability on this way:

P(Z

And we can use the following excel code to find the answer: "=NORM.DIST(-0.704,0,1,TRUE)"

6 0
3 years ago
A card is drawn from a standard 52-card deck. What is the probability that the card is a red 8, given that the card is an 8?
crimeas [40]
<span>probability that the card is a red 8
=
2 out of 52 or 1 out of 26

hope it helps</span>
8 0
3 years ago
Read 2 more answers
What is the square root of 69
Maurinko [17]
8
is the answer because8 times 8 equal 69
4 0
3 years ago
What is 4 + x / 7=2​
Taya2010 [7]

Answer:

-14

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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