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2 years ago

Activity calculate the mean of each set of numbers. a) 54,35, 27, 61, 38

Mathematics

2 answers:

Rzqust [24]2 years ago

8 0

Answer:

mean = 43

Step-by-step explanation:

the mean is calculated as

mean = $\frac{sum}{count}$ = $\frac{54+35+27+61+38}{5}$ = $\frac{215}{5}$ = 43

STALIN [3.7K]2 years ago

4 0

Answer:

The Mean is 43

Step-by-step explanation:

If you need me to explain how I got there- I would be happy to ^w^

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How can I do 30-4 as a mixed number

sertanlavr [38]

30 over 4 = 15·2 over 2·2 = 15 over 2 = 1 + 7·2 over 2 = 7 1 over 2
Whole number =7
Fraction = 1 over 2

Hope this helps

6 0

3 years ago

Sum of cubes: (a b)(a2 – ab b2) = a3 b3 Difference of cubes: (a – b)(a2 ab b2) = a3 – b3 Which products result in a sum or diffe

valentina_108 [34]

By comparing all the options with the formula of sum of cubes and difference of cubes we get that $(x+4)\left(x^{2}-4 x+16\right)$ is sum of cubes

<h3>What is formula of sum of cubes and difference of cubes?</h3>

Formula of sum of cubes and difference of cubes are following

$(a+b)(a^2 -ab +b^2) = a^3+ b^3 \\\\\\(a - b)(a^2+ ab+ b^2) = a^3 - b^3$

(a)

$(x-4) \left(x^{2}+4 x-16\right)\\=(x-4) \left(x^{2}+4 x-4^2\right)\\\\$

by comparison with formula we can say that this is neither sum or nor difference of cubes.

(b)

$(x-1)\left(x^{2}-x+1\right)\\=(x-1)\left(x^{2}-x+1^2\right)$

by comparison with formula we can say that this is neither sum nor difference of cubes.

(c)

$(x+1)(x-1)=x^{2}-1^{2}\\$

we can say that this is neither sum nor difference of cube as it's difference of squares.

(d)

$(x+4)\left(x^{2}-4 x+16\right)\\\\(x+4)\left(x^{2}-4 x+4^2\right)$

by comparison with formula this is equal to

$x^{3}+4^{3}\\$

Hence this is sum of cubes

(e)

$(x+4)\left(x^{2}+4 x+16\right)\\(x+4)\left(x^{2}+4 x+4^2\right)$

by comparison with formula we can say that this is neither sum nor difference of cubes.

By comparing all the options with the formula of sum of cubes and difference of cubes we get that $(x+4)\left(x^{2}-4 x+16\right)$ is sum of cubes

To know more about cubes visit: brainly.com/question/107100

8 0

2 years ago

Write an expression equivalent to e+e+e+e+e that is a sum of two terms.

slamgirl [31]

Answer:

5(e)

Step-by-step explanation:

please mark this answer as brainliest

5 0

3 years ago

In order to determine the average weight of carry-on luggage by passengers in airplanes, a sample of 25 pieces of carry-on lugga

Fynjy0 [20]

To find the standard error, divide the standard deviation by the square root of the sample size

standard deviation = 7.5
sample size = 25......sqrt 25 = 5

standard error = 7.5 / 5 = 1.5 <==

6 0

3 years ago

What is the factored form of 64g^3 +8?<br>

Gelneren [198K]

Answer:

8(2g + 1) (4g^2 - 2g + 1)

Step-by-step explanation:

8 0

4 years ago

Activity calculate the mean of each set of numbers. a) 54,35, 27, 61, 38​

Activity calculate the mean of each set of numbers. a) 54,35, 27, 61, 38