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arlik [135]
2 years ago
8

Which expressions are polynomials? Select each correct answer.

Mathematics
2 answers:
vodka [1.7K]2 years ago
4 0

answer:35x^2

Step-by-step explanation:

the first one is not b/c its x/5

the second one is not b/c has a square root

the last one it has negative exponents

dimulka [17.4K]2 years ago
3 0

Answer:

Step-by-step explanation:

By definition, the power of each term in a polynomial must be greater than or equal to 0.

So x/5+2 is a polynomial

4x+sqrt(x)-1 is not because sqrt(x) is x^(1/2)

35x^2 is a polynomial

7x^7-x^(-5) is not because -5 is less than 0.

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Find the y value for the point that divides the line segment CD into a ratio of 4:1.
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Answer:

We also drew a graph with 2 examples.

Step-by-step explanation:

If we have the line segment  CD, we can divide it by 4: 1 as follows:

If point C has the coordinates (x1, z1) and point D has the coordinates (x2, z2), we calculate coordinate the points Y as follows:

y1 = (x2-x1) · 4/5

y2 = (z2-z1) · 4/5

In this way we have obtained the point Y with the coordinates (y1, y2), and the point Y divides the line segment  CD by 4:1.

We also drew a graph with 2 examples.

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Step-by-step explanation:

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Read 2 more answers
Y= -x +3 and y = x - 1
inysia [295]

Answer:

x=2 and y=1

Step-by-step explanation:

Rewrite equations:

y=−x+3;y=x−1

Step: Solve

y=−x+3

Step: Substitute−x+3foryiny=x−1:

y=x−1

−x+3=x−1

−x+3+−x=x−1+−x(Add -x to both sides)

−2x+3=−1

−2x+3+−3=−1+−3(Add -3 to both sides)

−2x=−4−2x−2=−4−2

(Divide both sides by -2)

x=2

Step: Substitute2forxiny=−x+3:

y=−x+3

y=−2+3

y=1(Simplify both sides of the equation)

Hope this Helps you :)

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