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Delicious77 [7]
3 years ago
5

The speed of light is about 3x10 to the 8th power meters per second. About how far can light travel in 30 minutes?

Mathematics
1 answer:
ella [17]3 years ago
7 0
5.4x10^11 metres per second or 540,000,000,000 metres per second
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Analyze the graph below and complete the instructions as follows.
zhannawk [14.2K]

Answer:

Option A:

x^2 + (y - 2)^2 = 9

Step-by-step explanation:

We know that the equation for a circle centered in the point (a, b) and of radius R is given by:

(x - a)^2 + (y - b)^2 = R^2

So the first thing we need to find is the center of the circle.

We can see that the center is at:

x = 0

y = 2

Then the center is at the point (0, 2)

Now we want our circle to pass through point 2, located at a distance of 2 units from the radius of the first circle.

So the distance between the center and point 2 is 2 units plus the radius of the smaller circle:

And the radius of the smaller circle is one unit.

Then, the radius of a circle centered at (0, 2) that passes through point 2 is:

R = 1 + 2 = 3

Then we have a circle centered at (0, 2) and of radius R = 3

Replacing these in the equation for a circle we get:

(x - 0)^2 + (y - 2)^2 = 3^2

x^2 + (y - 2)^2 = 9

The correct option is A

5 0
3 years ago
What is 36% as a fraction and a decimal?
Black_prince [1.1K]
36%

as a fraction is: 9/25 in its simplest form 
as a decimal is: 0.36

hope my answer helped :)
7 0
3 years ago
Read 2 more answers
The mean shoe size of the students in a math class is 7.5. Most of the shoe sizes fall within 1 standard deviation, or between a
Zarrin [17]

Answer:

1.5


Step-by-step explanation:

The mean is the Middle number.

1 standard deviation in both sides of 7.5 makes it between 6 and 9.

<u>What is the </u><u>"common difference"</u><u> in 6 to 7.5 and from 7.5 to 9?</u>

7.5-6=1.5

and

9-7.5=1.5


So, we would say the standard deviation is 1.5

Answer choice A is right.

6 0
3 years ago
Read 2 more answers
David drove 135 miles in 3 hours
Lady_Fox [76]
135 miles in 3 hours = 135 / 3 = 45 miles per hour
6 0
3 years ago
How many more cents per item is 3 items for $10 than 2 items for $5? Express your answer to the nearest whole number.
fiasKO [112]
10/3: 3.33
5/2:2.50

3.33-2.50=0.83

Answer: 83 cents.

5 0
3 years ago
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