Answer:
24
Step-by-step explanation:
If you use Pascal's triangle, which I did, you will look at the 5th row of the triangle which contains the numbers 1, 4, 6, 4, 1
If we expand using a = 2x and b = -1, then the expansion looks like this:

If you simplify all that down by multiplying, you'll get

If you don't know how to use Pascal's triangle, you need to learn. It's so very cool!
Answer:
X= 0.1
Step-by-step explanation:
Remember that ln=

and

means

convert
ln(x+7)=9 means
e^(9)=x+7
minus 7 from both sides
e^9-7=x
use calculator to evaluate
8096.08=x aprox
Find a common denominator for every single pair of fractions
that will help you find the answer
i can do a couple but not all, hopefully my explanation will help you do the rest
3/5 and 3/3
3/15 and 3/15
9/15 and 15/15
15/15 is greater than 9/15
They can be derived by using calculus(integration to be precise)


(its how pi is defined)
so that gives circumference
to get area , you use integration


that gives the area.
if you don't know calculus yet ,dont worry, just remember the formulae.