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erastova [34]
3 years ago
6

What factors influenced the development and spread of technologies through time?

Advanced Placement (AP)
1 answer:
mart [117]3 years ago
6 0
Dated examples of the spread of technologies are the industrial revolutions in the 19h and 20th century that introduced electricity, the steam machine, the rail roads and many more.
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Suppose a vacuum cleaner uses 120 J of electrical energy. If 45 J are used to pull air into the vacuum cleaner, how efficient is
BaLLatris [955]
Power efficiency is defined as the ratio of the output power divided by the input power:
Efficiency= out/in • 100%
So, (120 - 45)J / 120J • 100% = 62.5%
3 0
4 years ago
You are correcting my spelling correct?
Alchen [17]
There is no answer for your question
6 0
4 years ago
Explanations
podryga [215]

The sampling distribution of the sample means for the random sample of 100 dogs will be 0.25.

<h3>How to compute the sample mean?</h3>

From the given information, the population distribution of the QDA scores for the fur of dogs is roughly uniform with mean 5.4 and standard deviation is 2.5.

In this case, the sampling distribution of the sample means will be:

= ✓SD/n

= ✓(2.5)²/100

= ✓0.0625

= 0.25

In conclusion, the correct option is 0.25.

Learn more about sampling on:

brainly.com/question/24466382

3 0
3 years ago
Hi?<br> <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7Bx%7D%20%20%5Cfrac%7Bx%7D%7By%7D%20" id="TexFormula1" title=" \sqrt{x} \f
Andreyy89
The simplified answer is:  " <span>x⁽³/²⁾ / y " ;  or, write as:  "  ∛(x²) / y " .
</span>_________________________________________________________

√x  * (\frac{x}{y}  =

(x⁽¹/²⁾ * x) / y ;  Since:  {√x = x⁽¹/²⁾ }.


Consider the numerator:
______________________
x⁽¹/²⁾ * x  ;
______________________
x⁽¹/²⁾ * x = x⁽¹/²⁾ * x¹ =x⁽¹ ¹/²⁾ ⁺ ⁽¹⁾ = x⁽¹ ¹/²⁾ / y =
______________________________________
         x⁽³/²⁾ / y ;  or, write as:  ∛(x²) / y .
__________________________________
<span />
8 0
4 years ago
How is everyone's day
Wewaii [24]
Sigh bad jus woke up and omw to school
8 0
2 years ago
Read 2 more answers
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