I need help with this question really quick!!!
1 answer:
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Answer:
35
Step-by-step explanation:
7 orchids can be lined as 7!. This means that for the first orchid of the line, you can select 7 options. When you place the first orchid, for the second option you can select among 6 since 1 orchid has already been placed. Similarly, for the 3rd orchid of the line, you have left 5 options. The sequence goes in this fashion and for 7 orchids, you have 7*6*5*4*3*2*1 possibilities. However, there is a restriction here. 3 of the orchids are white and 4 are levender. This means that it does not make a difference if we line 3 white orchids in an arbitrary order since it will seem the same from the outside. As a result, the options for lining the 7 orchids diminish. The reduction should eliminate the number of different lining within the same colors. Similar to 7! explanation above, 3 white orchids can be lined as 3! and 4 levender orchids can be lined as 4!. To eliminate these options, we divide all options by the restrictions. The result is:
= 35. [(7*6*5*4*3*2*1/(4*3*2*1*3*2*1)]
Answer:
Step-by-step explanation:
Remember that
Area of Circle =
They told us that for this circle, the area is
If you put it back into the formula for area of a circle we get:
Area of Circle =
Divide both sides by .
144 =
Now we want to solve for r (r = radius).
You need to square root each side
So now we know the radius, metres
Also remember that
Diameter =
So,
Diameter = 2 times 12 = 24 metres