Answer:
6.25 is the answer
Step-by-step explanation:
work in the () first
2.5(8.6÷2-1.8)
2.5(2.5)
the multiply the two numbers and get 6.25
hope this helps
Answer: Choice B. k(h(g(f(x))))
For choice B, the functions are k, h, g, f going from left to right.
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Explanation:
We have 4x involved, so we'll need f(x)
This 4x term is inside a cubic, so we'll need g(x) as well.
So far we have
g(x) = x^3
g( f(x) ) = ( f(x) )^3
g( f(x) ) = ( 4x )^3
Then note how we are dividing that result by 2. That's the same as applying the h(x) function

And finally, we subtract 1 from this, but that's the same as using k(x)

This leads to the answer choice B.
To be honest, this notation is a mess considering how many function compositions are going on. It's very easy to get lost. I recommend carefully stepping through the problem and building it up in the way I've done above, or in a similar fashion. The idea is to start from the inside and work your way out. Keep in mind that PEMDAS plays a role.
Area=πr^2
Area=π(16)^2
Area≈804.2477 cm^2
I left the number large enough in case you need to round it off to some other decimal place.
Answer:
It will take 11 minutes
Step-by-step explanation:
660 ÷ 60 = 11
Distance= rate×time
D=rt
660 (distance)= 60 (feet per minute or rate) × t (we have to find out the time it takes to get there.
We divide 660 by 60 to find the missing value, which is 11.