Answer:
35% chose baseball or soccer
Step-by-step explanation:
baseball or soccer = 20% + 15% = 35%
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The categories add to 100%, so are mutually exclusive, as you expect when they are "favorite sport" categories. Hence the union of two of them will be their sum. (Otherwise, you'd have to subtract the amount by which the categories overlap.)
I think D is the correct answer.
The answer will be 5(x^2-8)
Distance=speed*time
speed of light in miles=3.6 km/hr
7800 light years=7800(9.4607×10^12) km
thus the distance in miles will be as follows:
1 mile=1.60934
thus the distance from each to black hole is:
[7800(9.4607×10^12)]/1.60934
=4.5853244×10^16 miles