answer: The Earth's place in the galaxy was determined largely by an astronomer named Harlow Shapley. Thanks to the regular periods of these stars and their presence in globular clusters, Shapley was able to map the distances to a number of clusters.
Step-by-step explanation:
First, note the number of tiles in each color. So there are 6 black tiles and 9 white tiles.
The probability of picking a black tile the first time is 6/15 which is equal to
2/5
Now, with black tile gone there are 5 black tiles and 9 white tiles.
The probability of picking a black tile now is
5/14.
But because both picks have to happen, multiply the fractions resulting in
1/7
Step-by-step explanation:
For an equation of form Ax + By = C, we are given A, B, and C.
The x intercept is when the line/equation is on the x axis, or when y=0.
Therefore, if we plug y=0 into the equation Ax+By=C, and anything multiplied by 0 is equal to 0, we can say that
Ax + 0 = C
Ax = C
divide both sides by A
x = C/A
Therefore, the x intercept is equal to C/A
Similarly, for the y intercept, or when the line is on the y axis (or when x=0), we have
A*0 + By = C
By = C
divide both sides by B
y= C/B at the y intercept
Answer: c/2-4
Step-by-step explanation:
This is what I get :
1/2(c-8)
Distributed property
1/2(c) + 1/2(-8)
Do c and -8 as a fraction with denominator 1 solve across
1/2×c/1+1/2×-8/1
Here you can only divide -8by 2
C/2-8/2
To get -4
C/2-4
You can't go further
Answer:
20
Step-by-step explanation: