Which description is correct for the polynomial 5x³?
2 answers:
Answer: The answer is (D) cubic monomial.
Step-by-step explanation: The given polynomial is
We are to select the correct description of the above polynomial from the given options.
Since there is only one term in the polynomial, so it is a monomial.
Also, the power of the unknown variable is 3, so the degree of the polynomial is 3 and so it is a cubic polynomial.
Therefore, the given polynomial is a cubic monomial.
Thus, (D) is the correct option.
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Answer:
$2.24 / lb
Step-by-step explanation:
$1 = 100 cents
16 oz = 1 lb
Simplified,
= $2.24/ lb
Answer:
The dimensions of the yard are W=20ft and L=40ft.
Step-by-step explanation:
Let be:
W: width of the yard.
L:length.
Now, we can write the equation of that relates length and width:
(Equation #1)
The area of the yard can be expressed as (using equation #1 into #2):
(Equation #2)
Since the Area of the yard is , then equation #2 turns into:
Now, we rearrange this equation:
We can divide the equation by 5 :
We need to find the solution for this quadratic. Let's find the factors of 160 that multiplied yields -160 and added yields -12. Let's choose -20 and 8, since and
. The equation factorised looks like this:
Therefore the possible solutions are W=20 and W=-8. We discard W=-8 since width must be a positive number. To find the length, we substitute the value of W in equation #1:
Therefore, the dimensions of the yard are W=20ft and L=40ft.