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diamong [38]
2 years ago
12

11/20 as a simplified fraction

Mathematics
1 answer:
strojnjashka [21]2 years ago
3 0
11/20 is already reduced you cannot simplify this fraction
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All lines are straight or a triangle has four sides.
sveta [45]

This is a disjunction, B, because it has 2 statements with an OR in the middle.

7 0
3 years ago
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Past experience has indicated that the breaking strength of yarn used in manufacturing drapery material is normally distributed
vlabodo [156]

Answer:

95% two-sided confidence interval on the true mean breaking strength is (94.8cm, 99.2cm)

Step-by-step explanation:

Our sample size is 11.

The first step to solve this problem is finding our degrees of freedom, that is, the sample size subtracted by 1. So

df = 11-1 = 10.

Then, we need to subtract one by the confidence level \alpha and divide by 2. So:

\frac{1-0.95}{2} = \frac{0.05}{2} = 0.025

Now, we need our answers from both steps above to find a value T in the t-distribution table. So, with 10 and 0.025 in the two-sided t-distribution table, we have T = 1.812

Now, we find the standard deviation of the sample. This is the division of the standard deviation by the square root of the sample size. So

s = \frac{4}{\sqrt{11}} = 1.2060

Now, we multiply T and s

M = Ts = 1.812*1.2060 = 2.19/tex]For the lower end of the interval, we subtract the sample mean by M. So the lower end of the interval here is[tex]L = 97 - 2.19 = 94.81 = 94.8cm

For the upper end of the interval, we add the sample mean and M. So the upper end of the interval here is

L = 97 + 2.19 = 99.19 = 99.2cm

So

95% two-sided confidence interval on the true mean breaking strength is (94.8cm, 99.2cm).

7 0
3 years ago
A bag contains the following marbles: 5
Inessa [10]

Answer:

5:20

Step-by-step explanation:

There are 5 black marbles and 20 brown marbles.

You would put black marbles (5) first, because it came before brown (20) in the list.

5 0
3 years ago
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Help i dont know the formula for the triangle to find the answer its surface area n volume
777dan777 [17]

Answer:

#4=10.5

#5=48

Step-by-step explanation:

The formula for the triangle for area is 1/2 time base times hight

The forumale fot the triangle for volume is 1/2 time base times hight

So for number #4 it will be 1/2 x 3 x 7

and number #5, it will be 1/2 x 8 x 12

5 0
2 years ago
Kayla is having a neighbor watch her dog while she is gone for the week she decides to take 7/8 of a pound of dog food and put i
777dan777 [17]

Answer:

1/ 8 pounds of dog food

Step-by-step explanation:

Given that:

7/8 pounds of dog food shared equally into 7 containers ;

Number of dog food in each container will be :

Total dog food / Number of containers

(7/8) ÷ 7

(7 /8) * 1/ 7

7 / 56

= 1/8 pounds of dog food

4 0
2 years ago
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