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Anit [1.1K]
3 years ago
7

List all the perfect cubes up to 1000 and their cube roots.

Mathematics
1 answer:
DiKsa [7]3 years ago
4 0

Hello from MrBillDoesMath!

Answer:

1^3    =     1

2^3   =     8

3^3   =     27

4^3   =     64

5^3   =    125

6^3   =    216

7^3   =    343

8^3  =     512

9^3   =    729

10^3   =    1000

Thank you,

MrB


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Suppose that X is a random variable with mean 30 and standard deviation 4. Also suppose that Y is a random variable with mean 50
Vladimir79 [104]

Answer:

a) Var[z] = 1600

    D[z] = 40

b) Var[z] = 2304

    D[z] = 48

c) Var[z] = 80

    D[z] = 8.94

d) Var[z] = 80

    D[z] = 8.94

e) Var[z] = 320

    D[z] = 17.88

Step-by-step explanation:

In general

V([x+y] = V[x] + V[y] +2Cov[xy]

how in this problem Cov[XY] = 0, then

V[x+y] = V[x] + V[y]

Also we must use this properti of the variance  

V[ax+b] = a^{2}V[x]

and remember that

standard desviation = \sqrt{Var[x]}

a) z = 35-10x

   Var[z] = 10^{2} Var[x] = 100*16 = 1600

   D[z] = \sqrt{1600} = 40

b) z = 12x -5

   Var[z] = 12^{2} Var[x] = 144*16 = 2304

   D[z] = \sqrt{2304} = 48

c) z = x + y

   Var[z] =  Var[x+y] = Var[x] + Var[y] = 16 + 64 = 80

   D[z] = \sqrt{80} = 8.94  

d) z = x - y

   Var[z] =  Var[x-y] = Var[x] + Var[y] = 16 + 64 = 80

   D[z] = \sqrt{80} = 8.94

e) z = -2x + 2y

   Var[z] = 4Var[x] + 4Var[y] = 4*16 + 4*64 = 320

  D[z] = \sqrt{320} = 17.88

   

7 0
3 years ago
Can you pls help me thank you have a good day
expeople1 [14]

Answer:

the slope is  3/1  so if the point before your answer is (2,6) the add 3 to six and 1 to 2 and your answer is (3,9).

hope this helps

8 0
2 years ago
Read 2 more answers
80 divided by (16 divided by 2/5 + 3.75
Katarina [22]

Answer:

1.8285714

Step-by-step explanation:

7 0
3 years ago
The mathematics faculty at a college consists of 4 ​professors, 10 associate​ professors,8 assistant​ professors, and 10 instruc
Mariana [72]
44 *rounded real answer is 7/16
4 0
3 years ago
What is the greatest common factor of x^4 and x^5?
Naily [24]

Answer:

x^4

Explanation:

Breakdown x^4 = <u>x</u> · <u>x</u> · <u>x</u> · <u>x</u>

Breakdown x^5 = <u>x</u> · <u>x</u> ·  <u>x</u> · <u>x</u> · x

Here the common factor is x · x · x · x = x^4

Hence, the greatest common factor of x^4 and x^5 is x^4.

8 0
2 years ago
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