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3 years ago

What is the value of (3/10)3

Mathematics

1 answer:

Elenna [48]3 years ago

6 0

Answer:

$\frac{9}{10}$

Step-by-step explanation:

In this question, one is asked to multiply a fraction by a whole number, first model the question.

$\frac{3}{10}(3)$

In a situation like this, one multiplies the whole number by the numerator (number) over the fraction.

$\frac{3*3}{10}$

Simplify,

$\frac{9}{10}$

A common error that people make is that they will multiply both the numerator and denominator by the whole number, this is the same as multiplying the answer by (1), thus it is incorrect.

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From a population of 200 elements, the standard deviation is known to be 14. a sample of 49 elements is selected. it is determin

Savatey [412]

N = population size
n = sample size
sigma = population standard deviation
xbar = sample mean
SE = standard error
fpc = finite population correction

In this case,
N = 200
n = 49
sigma = 14
xbar = 56

Since n/N = 49/200 = 0.245 is larger than 0.05, this means we must use a finite population correction factor. I'll use fpc in place of 'finite population correction'.
If we ignore the fpc, then the SE would be simply sigma/sqrt(n) = 14/sqrt(49) = 2.
However we cannot ignore the fpc. We must use it due to the fact that n/N > 0.05.

--------------------------

Let's compute the fpc factor
fpc = sqrt((N-n)/(N-1))
fpc = sqrt((200-49)/(200-1))
fpc = 0.87108780834612

--------------------------

With the fpc factor, we'll have the true SE to be SE = fpc*sigma/sqrt(n) = 0.87108780834612*14/sqrt(49) = 1.74217561669224

The final answer, accurate to 6 decimal places, is therefore 1.742176

6 0

3 years ago

What is the value of <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B%28p%20%7B%20%20%7D%5E%7B2%7D%20%7D%20%20-%204q%29%20%5C

damaskus [11]

Answer:

4

Step-by-step explanation:

Given :-

p = 6

q = 5

√(p² - 4q)

To Find :-

Value of expression after evaluation

Solving :-

= √(6)² - 4(5)

= √36 - 20

= √16

= 4

Solution :-

4

7 0

2 years ago

Read 2 more answers

What are mixed numbers

Colt1911 [192]

Mixed numbers are fractions with a whole number.

For example, 1 2/4, 2/8, and 7 7/8 are mixed numbers.

Hope it helps

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3 years ago

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A coach needs both small and large cones to set up an obstacle course. The coach knows that there are fewer than 30 cones in the

Pepsi [2]

Since they are FEWER than 30 total cones, the sum of x small cones and y large one must be LESS THAN 30: x+y <30
He needs AT LEAST a dozen (12), so that means that 12 will work or more than 12:
$y \geqslant 12$

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3 years ago

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If point c is between points A and B then AC+CB=___ A.AB B.CA C.BC D.ABC

EastWind [94]

Answer:

A.AB

Step-by-step explanation:

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3 years ago