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finlep [7]
3 years ago
15

6/13 by 6/12? what is the answer

Mathematics
2 answers:
Olenka [21]3 years ago
7 0
If multiplied it's 0.23076923076. If divided it's 12/13.
Leto [7]3 years ago
4 0
(6/13)/(6/12)= (6/13)*(12/6)= 12/13   
This rule for division applies to all fraction divisions

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Solve for L.
Kitty [74]
The answer is (C)L= (P-2W)/2
6 0
3 years ago
An electrical firm manufactures light bulbs that have a length of life that is approximately normally distributed, with mean equ
kompoz [17]

Answer:

0.62% probability that a random sample of 16 bulbs will have an average life of less than 775 hours.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation \frac{\sigma}{\sqrt{n}}

Normal probability distribution.

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 800, \sigma = 40, n = 16, s = \frac{40}{\sqrt{16}} = 10

Find the probability that a random sample of 16 bulbs will have an average life of less than 775 hours.

This probability is the pvalue of Z when X = 775. So

Z = \frac{X - \mu}{s}

Z = \frac{775 - 800}{10}

Z = -2.5

Z = -2.5 has a pvalue of 0.0062. So there is a 0.62% probability that a random sample of 16 bulbs will have an average life of less than 775 hours.

5 0
3 years ago
Find.<br> 12/18 = n/36<br><br> n = (Blank)
Orlov [11]

Solve for n by simplifying both sides of the equation, then isolating the variables.

n=54

Hope I helped

4 0
3 years ago
Which mixed number is greater than 4.63?A.4 2/3 B.4 3/5 C.4 5/9 D.4 5/8
Liula [17]

answer
<span>A.4 2/3 is greater than 4.63
because 4 2/3 = 4.67</span>
4 0
3 years ago
What is tge total surface area of a solid sphere of diameter 14cm
Alborosie

The surface area of a sphere of radius r is A = 4π*r^3.


Since the radius in this case is 7 cm (half the 14 cm diameter), the area of this sphere is


A = 4π(7 cm)^2, or 196π cm^2.

7 0
3 years ago
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