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Ne4ueva [31]
2 years ago
5

Which expression is a perfect cube

Mathematics
1 answer:
mamaluj [8]2 years ago
6 0

Answer: some perfect cubes are

8 (2^3)

27 (3^3)

64 (4^3)

there are many perfect cubes

maybe there is more to this question?

Step-by-step explanation:

A perfect cube of a number is a number that is equal to the number, multiplied by itself, three times. If x is a perfect cube of y, then x = y3. Therefore, if we take the cube root of a perfect cube, we get a natural number and not a fraction. Hence, 3√x = y. For example, 8 is a perfect cube because 3√8 = 2.

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Which statement best describes the relationship between x and y in the equation y = 6 + x?
mash [69]

Answer:

A. The Value of y is six less than the value of x

Step-by-step explanation:

This is because the value of x is equal to y when six is added.

7 0
3 years ago
Choose a system of equations with the same solution as the following system:
Lina20 [59]

Answer:

Option A.

Step-by-step explanation:

We are given 6x+2y =-6 ......(1) and 3x-4y=-18 .....(2)

Solving equations (1) and (2) we get

12x+3x =-30, ⇒x= -2 and from equation (1), 2y= -6-6(-2) =6, ⇒ y=3

Therefore, the solution for the given set of equations is x= -2 and y=3

A) Solving the equations 8x+4y = -4 ....... (3)and 17x+2y =-28, we get  

8x -34x = -4 -(-56) =52, ⇒-26x =52, ⇒x=-2 and from equation )(3), we get -16+4y =-4, ⇒ y=3

Therefore, the solution x=-2 and y =3 match with the original solution.

B)Solving the equations 12x + 4y = 12 ....... (4)and 21x + 2y = −36, we get  

12x -42x = 12 -(-72) =84, ⇒-30x =84, ⇒x=-84/30.

Therefore, the solution x=-84/30 does not match with the original solution.

C) Solving the equations 6x + 8y = −36 ....... (4) and 15x + 6y = −60, we get 18x -60x = -108 -(-240) =132, ⇒-42x =132, ⇒x=-132/42

Therefore, the solution x=--3  do not match with the original solution.

D) Solving the equations 6x + y = 15 ....... (5) and 15x − y = −9, we get 6x +15x = 6, ⇒21x =6, ⇒x=2/7  

Therefore, the solution x=2/7  do not match with the original solution.

Therefore, option A) will have the same solution. (Answer)

4 0
3 years ago
Writ all the factors other than 1 and the number itself <br><br><br>for 5th grade
Vinil7 [7]

Answer:

A prime number has exactly two factors, 1 and itself. For example, 13 is a prime number because the only factors of 13 are 1 and 13

<em>if this is what you are looking for..</em>

8 0
1 year ago
A hostess earned a 5% tip. What decimal is equivalent to 5%?
Leona [35]

Answer:

.05 is the equivalent of 5 percent.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
PLS HELPPPP<br> Solve 3x2 + 18x + 15 = 0 by completing the square. <br> I CANT FIND REAL ANSWER!
Dmitriy789 [7]

Answer:

x = − 1 , − 5

7 0
3 years ago
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