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:
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Answer:
x <= -18
x is less than and equal to minus eighteen.
Step-by-step explanation:
treat the the sign of inequality as the sign of equal to (=)
x/3 <= -6
× <= -6×3
x <= -18
The age of the radioactive artifact is approximately 19029.6 years old
<h3>Radioactivity</h3>
Radioactivity is the phenomenon of the spontaneous disintegration of unstable atomic nuclei to atomic nuclei to form more energetically stable atomic nuclei. Radioactive decay is a highly exoergic, statistically random, first-order process that occurs with a small amount of mass being converted to energy.
To solve this problem, we have to find the disintegration constant and we can use the formula of half-life of the sample to do that.
The half-life of a sample is given as;
The formula of radioactivity is given as
Substituting the values into the equation
The artifact is approximately 19029.6 years.
Learn more on radioactivity here;
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Answer:
hgdssssafghsdgfdhjfdhgfhdgsfhshdfhsadgh
Step-by-step explanation:
Answer:
Step-by-step explanation:
Amount paid for first 100 watches = (65% of 80) *100
Amount paid for next 50 watches = (55% of 80) * 50
Remaining watches = 280 -(100+ 55)
= 280 - 155 = 125
Amount paid for 125 watches = (45% of 80) *125
Amount received by the watch maker = 5200 + 2200 + 4500
= £ 11900