What is 19.2×108 minutes in hours?

2 answers:

6 0

The answer is: [C]: " 3.200 * 10⁷ h " .
_________________________________________________
Explanation:
________________________________
19.2 * 10⁸ min * (1 hr / 60 min) ;

= (19.2 * 10⁸)
_______________ ;
         60

_____________________________
Divide EACH SIDE of the fraction by "10" ; to get:
___________

(19.2 * 10⁷)
_______________ ;
         6

<span>______________________________

</span>⇒ (19.2) ÷ (6) = 3.2 ; so rewrite as:
_________________________________________________________

3.2 * 10⁷ ; which corresponds with:

Answer choice: [C]: " 3.200 * 10⁷ h " .
_________________________________________________________

Alchen [17]4 years ago

3 0

Answer:

$19.2\times 10^8\ minutes$ in hour is:

$3.200 \times 10^7\ h$

Step-by-step explanation:

1 hour=60 minutes

⇒ 1 minute= $\dfrac{1}{60}$ hour

⇒ $19.2\times 10^8\ minutes=\dfrac{1}{60}\times 19.2\times 10^8\ hour$

⇒ $19.2\times 10^8\ minutes=3.200 \times 10^7\ hour$

Hence, $19.2\times 10^8\ minutes$ in hour is:

$3.200 \times 10^7\ h$

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If a 12 sided regular polygon rotates about its center at which angle of rotation will the image of the polygon coinside with th

Amanda [17]

Answer: 30 degrees

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Why this value? Well because 360/12 = 30

Consider a triangle with 3 sides. Specifically I mean an equilateral triangle. We can rotate it 120 degrees to have it line up with itself. Now notice that 360/3 = 120.

For a square, we can rotate it 90 degrees and we can say 360/4 = 90

So the general rule is that the minimum angle of rotation is 360/n, where n is the number of sides. This rule only works for regular polygons. Regular polygons have the same side length and the same angle measure (the side and angle measure won't necessarily be equal).

So going back to this 12 sided dodecagon, we have n = 12 and 360/n = 360/12 = 30 as the minimum angle of rotation. Each 30 degree rotation will have the polygon match up perfectly with its old image. The preimage and image will be identical.

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anzhelika [568]

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$170544\text{ ways}$

Step-by-step explanation:

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