What two properties of a Cepheid variable star do we need to know in order to calculate the approximate distance from Earth?
1 answer:
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Answer:
Step-by-step explanation:
Subtract 295 from both sides:
Add 33x to both sides:
Divide both sides by 72:
Step-by-step explanation:
First, let's distribute the variable to each term in the first parenthesis:
Next, let's distribute the variable to each term in the second parenthesis:
Next, let's group like terms together:
Finally, let's add or subtract like terms to get the result:
We have a question on motion with the elements of distance, time taken and speed.
This question in particular is asking us for distance per unit time (in this case, hours).
We are required to find out how much distnace is covered in on hour and our approach will be as follows:
This right here just tells us that 4 hours, Madeline covered 180 miles and since her rate was constant (equal distances in equal times), then she also covered 45 miles in an hour.
Now we plot our number line.
