the options that are polynomials are:
3.9x³-4.1x² + 7.3
x²y²-4x³+12y
4-x²
<h3>Which algebraic expressions are polynomials?</h3>
A polynomial is an expression of the form:
p(x) = aₙ*xⁿ + ...+ a₂*x² + a₁*x + a₀
Where all the exponents of the variable are whole numbers, and in this case we have only one variable x, but we could have any number of variables.
With that in mind, the options that are polynomials are:
3.9x³-4.1x² + 7.3
x²y²-4x³+12y
4-x²
These 3 expressions are polynomials.
If you want to learn more about polynomials:
brainly.com/question/4142886
#SPJ1
Answer:
She can read 120 pages
Step-by-step explanation:
We can use ratios to solve
20 pages x pages
--------------- = -----------
1/2 hour 3 hours
Using cross products
20 *3 = 1/2 x
Multiply by 2
20*3*2 = 1/2 *2 *x
120 = x
She can read 120 pages
The event "P and Q" is a compound event in the probability, and the true statement about the probability is P(P and Q) = 1/9
<h3>How to determine the true statement?</h3>
The probabilities are given as:
P(P) = 1/6
P(Q) = 2/3
The probability of the event P and Q is calculated using:
P(P and Q) = P(P) * P(Q)
This gives
P(P and Q) = 1/6 * 2/3
Evaluate the product
P(P and Q) = 1/9
Hence, the true statement about the probability is P(P and Q) = 1/9
Read more about probability at:
brainly.com/question/251701
keeping in mind that a year has 12 months, thus 6 months is really 6/12 of a year.
Answer:
x+3-5 i think
Step-by-step explanation:
"and" means add so x+3 and subtract 5
