Answer:
238
Step-by-step explanation:
238.964286
Two expressions for the perimeter of a square are:
4a
- a represents one side of the square
a + a + a + a
- a representa one side of the square
the first expression does not include any addition. But the two expressions are actually equivalent.
Kelly has $10
- half: $10 - 1/2 x $10
$10 - $5 = $5
- one third: $5 - 1/3 x $5
$5 - $1.6667... or $5 - $1 and 2/3 = $3.33... or $3 and 1/3 or $10/3
She will have left $3.33 left, or $3 and 1/3
Arcsecant or arcsec or sec⁻¹ is an inverse trigonometric function. And many calculators don't have a key for them because they can be calculated with basic trigonometric functions like so:
sec⁻¹(x)=cos⁻¹(1/x).
So the correct answer is the fourth one: y=cos⁻¹(1/x).
Answer:
18564
Step-by-step explanation:
In the problem Given, we just need to see t any 6, the order of selection does not matter, hence, this is a combination problem :
Using the combination relation :
nCr = 18C6
Recall ;
nCr = n! / (n-r)!r!
18C6 = 18! / (18-6)!6!
18C6 = 18! / 12!6! = (18*17*16*15*14*13) / (6*5*4*3*2*1)
18C6 = 13366080 / 6!
18C6 = 18564
