That is the combination of 10 over 3, which is calculated as the quotient of factorials:
n!/k!(n-k)!
where n = 10 and k = 3:
= 10!/3!(10 - 3)!
= 10!/3!*7!
= (10*9*8)/(3*2*1)
= 720/6
= 120
therefore there a re 120 possible different groups
For this case we have the following equation:
By completing squares we have:
Step 1:
Add 
on both sides:
Step 2:
We rewrite the equation:
Step 3:
We solve the equation:
Solutions:
Answer:
the next line would be:
Answer:
$7.05
Step-by-step explanation:
since 7 planes are $16.45 just divide 16.45 by 7
the answer is 2.35 so do 2.35 times 3 which equals $7.05
p.s. please give brainliest
The answer is D. 12+5=17 and 5*12+5=65.
This equation is correct because adult tickets cost five dollars (5 per adult) and childrens tickets cost one dollar (one per child), which need to be added together to get the total.
