PLEASE HELP PRECALC!! 1. Is the function f(x)=5x^2-3x^4+3/4x-7 a polynomial function? If so, state its degree and the leading co
2 answers:
Answer:
Step-by-step explanation:
If we put this polynomial (yes it is a polynomial) in order of descending powers of x, it would be
The definition of a polynomial is an expression of more than 2 algebraic terms, especially the sum of several terms that contain different powers of the same variable(s).
Not just a sum. A difference too, but since every subtraction problem can be written as an addition, that's why they say "the sum of several terms". The degree of the polynomial is the same as the highest power of x. Ours is a 4th degree. The leading coefficient is the first number that leads the polynomial when it is put into order of descending powers of x. Our coefficient is -3. To sum up:
Yes, it is a polynomial; it is a degree 4 with a leading coefficient of -3
That is choice C
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Answer:
Step-by-step explanation:
The area of a cube shaped box is given by :
Where
s is the side length and A is the surface area
We have, s = 9 inches
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So, the required area is .
Answer:
Multiple answers
Step-by-step explanation:
The original urns have:
- Urn 1 = 2 red + 4 white = 6 chips
- Urn 2 = 3 red + 1 white = 4 chips
We take one chip from the first urn, so we have:
The probability of take a red one is : (2 red from 6 chips(2/6=1/2))
For a white one is: (4 white from 6 chips(4/6=(2/3))
Then we put this chip into the second urn:
We have two possible cases:
- First if the chip we got from the first urn was white. The urn 2 now has 3 red + 2 whites = 5 chips
- Second if the chip we got from the first urn was red. The urn two now has 4 red + 1 white = 5 chips
If we select a chip from the urn two:
- In the first case the probability of taking a white one is of:
= 40% ( 2 whites of 5 chips)
- In the second case the probability of taking a white one is of:
= 20% ( 1 whites of 5 chips)
This problem is a dependent event because the final result depends of the first chip we got from the urn 1.
For the fist case we multiply :
x
=
= 26.66% (
the probability of taking a white chip from the urn 1,
the probability of taking a white chip from urn two)
For the second case we multiply:
x
=
= .06% (
the probability of taking a red chip from the urn 1,
the probability of taking a white chip from the urn two)