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4 years ago

Injekejhfufkgghhhhhh

Mathematics

1 answer:

katovenus [111]4 years ago

3 0

Answer:

hdsukabshdushwvdhzbskakzyduehdbbs s usususvws ususywgd

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Simplify: √27x^2y^2 A) 27xy B) 3xy C) 3xy√3 D) xy√27

iren2701 [21]

Answer:

$\sqrt{27x^2y^2}=3xy\:\sqrt{3}$

Hence, option C is correct.

Step-by-step explanation:

Given the expression

$\sqrt{27x^2y^2}$

simplifying the expression

$\sqrt{27x^2y^2}=\sqrt{27}\sqrt{x^2}\sqrt{y^2}$

Apply radical rule: $\sqrt{a^2}=a,\:\quad \mathrm{\:assuming\:}a\ge 0$

$=\sqrt{27}x\sqrt{y^2}$

Apply radical rule: $\sqrt{a^2}=a,\:\quad \mathrm{\:assuming\:}a\ge 0$

$=\sqrt{27}xy$

$=xy\sqrt{3^3}$

$=xy\sqrt{3^2\cdot \:\:3}$

Apply radical rule: $\sqrt{a^2}=a,\:\quad \mathrm{\:assuming\:}a\ge 0$

$=3xy\:\sqrt{3}$

Therefore,

$\sqrt{27x^2y^2}=3xy\:\sqrt{3}$

Hence, option C is correct.

6 0

3 years ago

If Sam kicks a soccer ball that has a mass of 10 kg with an acceleration of 22 meters per second squared, what is the force he k

MrMuchimi

Answer:

220 i think but im not sure

Step-by-step explanation:

4 0

3 years ago

Please help, Find the Quotient, simplify your answer, Show your work

sladkih [1.3K]

9a/5b is the answer, the (-7) cancel out.

5 0

3 years ago

Find the standard deviation. Round to the nearest tenth. 1, 2, 11, 8, 16, 16,20, 16, 18 OA. 6.5 O B. 6.9 O C. 1.5 ? D. 7.4

NikAS [45]

Answer:

A. 6.5

Step-by-step explanation:

First we find the average $\bar{x}$ of the 9 data:

$\bar{x} =\frac{\sum_{x=1}^{n}x_{i}}{n}$

Where n is the data number, that in this case is 9.

$\bar{x} =\frac{1+ 2+ 11+ 8+ 16+ 16+20+ 16+ 18}{9}=12\\$

The formula of the standard deviation $\sigma$ is:

$\sigma=\sqrt{\frac{\sum_{x=1}^{n}(x_{i}-\bar{x})^{2}}{n}}$

We replace the data and find the value of the standard deviation:

$\sigma=\sqrt{\frac{(1-12)^{2}+(2-12)^{2}+(11-12)^{2}+(8-12)^{2}+(16-12)^{2}+(16-12)^{2}+(20-12)^{2}+(16-12)^{2}+(18-12)^{2}}{9}}$

$\sigma=\sqrt{\frac{(-11)^{2}+(-10)^{2}+(-1)^{2}+(-4)^{2}+(4)^{2}+(4)^{2}+(8)^{2}+(4)^{2}+(6)^{2}}{9}}=6,54$

We approximate the number and the solution is 6,5

6 0

4 years ago

Which correlation coefficient represents a moderate negative correlation? r = –0.04 r = –0.24 r = –0.64 r = –0.94

sdas [7]

Answer:0.64

Step-by-step explanation:

The moderate negative correlation cannot be close to zero or -1

5 0

3 years ago

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