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USPshnik [31]
3 years ago
13

What is a perfect cube and how can you check if a given number is a perfect cube? Explain why.

Mathematics
2 answers:
Sholpan [36]3 years ago
6 0

Answer:

Read below.

Step-by-step explanation:

A perfect cube is a number cubed (If that makes sense). Such as 3³ will equal a perfect cube because it's being multiplied by itself 3 times. 3×3×3=9. It will work for any whole number. You can check if a given number is a perfect cube by using the cube root (\sqrt[3]{x}).

Hope it makes sense!

soldi70 [24.7K]3 years ago
6 0

Step-by-step explanation:

A perfect cube is a cube whose cube root can be easily gotten by using methods such as factor method eg 125 is a perfect cube whose cube root is 5. You can know if a number is a perfect cube 1.) if it gives you a perfect cube root

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inna [77]

(a) Answer: One solution.

Explanation: two lines that have same slope with opposite sign will necessarily cross each other at a single point, as one is "pointing uphill" and the other "downhill."

(b)  Answer: Infinitely many solutions.

Explanation:

2x + 3y = 5.5

4x + 6y = 11   | divide by 2

-->

2x + 3y = 5.5

2x + 3y = 5.5

--> equations are identical.

2x + 3y = 2x + 3y

so any (x,y) will satisfy this equation. This means infinitely many solutions.

(c) Answer: One solution

Explanation:

Continuing the two lines it becomes obvious they will cross at one point (the solution)

(d) Answer: No solution

Explanation: If the two lines are parallel, they will never cross (by definition of "parallel"). Therefore there will be no solution to the corresponding linear system.


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3 years ago
Mrs. Cazares went shopping for candy for her students. She bought 6 bags of candy. She had a coupon for $6 off her purchase. If
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Answer:

7

Step-by-step explanation:

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3 0
3 years ago
Read 2 more answers
What is the area of parallelogram ABCD?<br>​
Andrej [43]

Answer:

15

Step-by-step explanation:

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3 years ago
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Which sign makes this number sentence true?
I am Lyosha [343]

Answer:

C. =

Step-by-step explanation:

whenever you have |  | It will always be positive so -6 turns to 6 and that makes it equal.

4 0
2 years ago
What is the simplified form of the equation 4/5n - 3/5 = 1/5n?
Oksi-84 [34.3K]

Answer:

n = 1 if you meant "(4/5)n - (3/5) = (1/5)n"

Step-by-step explanation:                                                                              

There's some ambiguity here.  Did you mean (4/5)n or did you

              4

mean --------- ?  Please use parentheses to eliminate this ambiguity.

              5n    

I'm going to assume that you meant to type in (4/5)n - (3/5) = (1/5)n.

Then we have (3/5)n = 3/5, or n = 1

                                                                                                 

4 0
3 years ago
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