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Ivan
2 years ago
12

A student simplified the rational expression

Mathematics
2 answers:
Anna [14]2 years ago
8 0

Answer:

Does the answer help you?

tatyana61 [14]2 years ago
6 0

Answer:

\textbf{No, the answer is not correct }.

Step-by-step explanation:

The student didn't use the quotient of powers property correctly. Instead of subtracting, the student divided the exponents within the parenthesis. So, x to the two-fifths power is the correct simplified form.

(\frac{x^{2/5}\times x^{4/5}  }{x^{2/5} } )

=(\frac{x^{6/5} }{x^{2/5} } )^{1/2}

=x^{6/5-2/5} )^{1/2}

=(x^{4/5} )^{1/2} =x^{2/5}

<u>OAmalOHopeO</u>

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Write the equation of the line that passes through the points (-9, -3) and (-7,7).
tiny-mole [99]

Answer:

y=5x+42

Step-by-step explanation:

m=(y2-y1)/(x2-x1)

m=(7-(-3))/(-7-(-9))

m=(7+3)/(-7+9)

m=10/2

m=5

y-y1=m(x-x1)

y-(-3)=5(x-(-9))

y+3=5(x+9)

y=5x+45-3

y=5x+42

6 0
3 years ago
Tyson brought a bag of coins into the bank to be counted. The bag contained only nickels and
podryga [215]

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3 years ago
You bought a magazine for $5 and some notepads for $4 each. You spent a total of $24. What is the most amount of notepads you ca
slava [35]

Answer: 4 notepads


Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
How many 1-inch cubes do you need to create a cube with an edge length of 5 inches?
REY [17]
125, 1 - inch cubes.

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3 0
4 years ago
The lengths of three sides of a quadrilateral are shown below:
sasho [114]

Part A: To find the lengths of sides 1, 2, and 3, we need to add them together. We can do this by combining like terms (terms that have the same variables, or no variables).


(3y² + 2y − 6) + (3y − 7 + 4y²) + (−8 + 5y² + 4y)


We can now group them.


(3y² + 4y² + 5y²) + (2y + 3y + 4y) + (-6 - 7 - 8)


Now we simplify


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Part B: To find the length of the 4th side, we need to subtract the combined length of the 3 sides we know from the total length (perimeter).


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Simplify, subtract like terms.


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4y³ + 6y² + 7y - 5 is the length of the 4th side.


Part C (sorry for the bad explanation): A set of numbers is closed, or has closure, under a given operation if the result of the operation on any two numbers in the set is also in the set. For example, the set of real numbers is closed under addition, because adding any two real numbers results in another real number. Likewise, the real numbers are closed under subtraction, multiplication and division (by a nonzero real number), because performing these operations on two real numbers always yields another real number.

<em>Polynomials are closed under the same operations as integers. </em>

7 0
3 years ago
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