Answer:
12
Step-by-step explanation:there are only 12 girls so that is the only amount of groups to be formed
Answer:
m<U=60°
Step-by-step explanation:

To find all the different possible combinations, you multiply all the possibilities for each position.
1st - she as 20 different possible buttons
2nd - she would have 19 possible buttons
3rd-she would have 18 possible buttons
20 x 19 x 18=6840 possible ways to choose these buttons.
Answer: Option 'c' is correct.
Step-by-step explanation:
Since we have given that
Number of bushels of peanuts = 800
Price of each bushels of peanuts = $5.85
And there is mark up rate = 33%
So, Total price would be

If there is spoilage rate = 21%
So, the remaining rate would be 1-0.21=0.79
so, Number of remaining bushels of peanuts would be

So, Selling price per bushel would be

Hence, Option 'c' is correct.
8/x-7=7/2
16=7(x-7) cross multiply
16=7x-49
-7x=-49-16
-7x=-65 divides each side by -7
-7x/7=-65/7
X=65/7
Alternative form
X=92/7
Which is 1st options in your questions.
Hope this helps!