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Ronch [10]
3 years ago
9

How to find a fraction between two fractions

Mathematics
2 answers:
Sati [7]3 years ago
6 0
<span> all we need to do is make the sum of the numerators be the new numerator, and the sum of the denominators be the new denominator. So, for example, a </span>fraction between<span> 7/13 and 6/11 is (7 + 6)/(13+ 11) =13/24</span>
Ahat [919]3 years ago
4 0
To find a fraction between two fractions<span>, all we need to do is make the sum of the numerators be the new numerator, and the sum of the denominators be the new denominator. So, for example, a </span>fraction between<span> 7/13 and 6/11 is (7 + 6)/(13+ 11) =13/24.</span>
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He​ _____________ distribution is used to develop confidence interval estimates of variances or standard deviations.
weqwewe [10]

The answer is the chi square distribution. In Statistics and probability theory, the chi distribution is a continuous probability distribution.  The chi-square distribution is a distinct case of the gamma distribution and is one of the most extensively used probability distributions in inferential statistics for instance, in construction of confidence intervals or in hypothesis testing.

4 0
3 years ago
The probability model below describes the number of repair calls that an appliance repair shop may receive during an hour. Compl
defon

Answer:

a) So, she can expect a 2.4 calls per hour.

b) So, the standard deviation is 0.8.

Step-by-step explanation:

We know that probability model below describes the number of repair calls that an appliance repair shop may receive during an hour.

Repair Calls 1 2 3 4  

Probability 0.1 0.5 0.3 0.1

a) We calculate how many calls should the shop expect per hour.

We get:

E(X)=1\cdot0.1+2\cdot0.5+3\cdot0.3+4\cdot0.1\\\\E(X)=0.1+1+0.9+0.4\\\\E(X)=2.4

So, she can expect a 2.4 calls per hour.

b) We calculate the standard deviation:

\sigma=\sqrt{(1-2.4)^2\cdot 0.1+(2-2.4)^2\cdot 0.5+(3-2.4)^2\cdot 0.3+(4-2.4)^2\cdot 0.1}\\\\\sigma=\sqrt{0.196+0.08+0.108+0.256}\\\\\sigma=\sqrt{0.64}\\\\\sigma=0.8

So, the standard deviation is 0.8.

3 0
3 years ago
What is the answer for this ?
xenn [34]

Answer:

using pythagorean theorem

Hypotenuse ²=Adjacent ²+ Opposite ²

Hypotenuse ²=5.6²+7.2²

Hypotenuse ²=83.2

Hypotenuse=√83.2

Hypotenuse=9.12m

3 0
3 years ago
Which value is closets to 8 11/20 A)8 B)8 1/2 C)8 3/4 D) 9
Alona [7]
I would say the answer is B. 8 1/2 because 11/20 is close to 10/20 which would be the same as 1/2
4 0
3 years ago
The green triangle is a dilation of the red triangle with a scale factor of s=1/3 and the center of dilation is at the point (4,
klasskru [66]

Given:

The scale factor is s=\dfrac{1}{3} and the center of dilation is at the point (4,2).

Red is original figure and green is dilated figure.

To find:

The coordinates of point C' and point A.

Solution:

Rule of dilation: If a figure is dilated with a scale factor k and the center of dilation is at the point (a,b), then

(x,y)\to (k(x-a)+a,k(y-b)+b)

According to the given information, the scale factor is \dfrac{1}{3} and the center of dilation is at (4,2).

(x,y)\to (\dfrac{1}{3}(x-4)+4,\dfrac{1}{3}(y-2)+2)            ...(i)

Let us assume the vertices of red triangle are A(m,n), B(10,14) and C(-2,11).

Using (i), we get

C(-2,11)\to C'(\dfrac{1}{3}(-2-4)+4,\dfrac{1}{3}(11-2)+2)

C(-2,11)\to C'(\dfrac{1}{3}(-6)+4,\dfrac{1}{3}(9)+2)

C(-2,11)\to C'(-2+4,3+2)

C(-2,11)\to C'(2,5)

Therefore, the coordinates of Point C' are C'(2,5).

We assumed that point A is A(m,n).

Using (i), we get

A(m,n)\to A'(\dfrac{1}{3}(m-4)+4,\dfrac{1}{3}(n-2)+2)

From the given figure it is clear that the image of point A is (8,4).

A'(\dfrac{1}{3}(m-4)+4,\dfrac{1}{3}(n-2)+2)=A'(8,4)

On comparing both sides, we get

\dfrac{1}{3}(m-4)+4=8

\dfrac{1}{3}(m-4)=8-4

(m-4)=3(4)

m=12+4

m=16

And,

\dfrac{1}{3}(n-2)+2=4

\dfrac{1}{3}(n-2)=4-2

(n-2)=3(2)

n=6+2

n=8

Therefore, the coordinates of point A are (16,8).

5 0
3 years ago
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