So in this case we just want to find the cubic root of this.
Cubic roots:
1: 1
2: 8
3: 27
4: 64
5: 125
6: 216
7: 343
8: 512
9: 729
So each side of the rectangular prism is 9 feet long.

8 0

3 years ago

400ml of squash is made by mixing 50ml of cordial with water. what fraction of the drink is water?

olga55 [171]

7/8 of that drink is water because 50 ml is 1/8 of 400 so the other 7/8 is water

8 0

2 years ago

Please helpppp! i’ll mark brainliest

Fiesta28 [93]

Answer:

from what i see i see thats its D

if not im sorry but i hope i got it right

Step-by-step explanation:

8 0

2 years ago

Sound City sells the ClearTone-400 satellite car radio. For this radio, historical sales records over the last 100 weeks show 5

Harman [31]

Answer:

μ =2.23

$\sigma_x^2= 1.49$

$\sigma_x=1.22$

Step-by-step explanation:

Radio(x) weeks P(x)

0 5 5/100 = 0.05

1 27 27/100=0.27

2 27 27/100 = 0.27

3 27 27/100 = 0.27

4 9 9/100=0.09

5 5 5/100=0.05

We know that

Mean ,μ

$\mu =\sum x.P(x)$

μ = 0 x 0.05 + 1 x 0.27 + 2 x 0.27 + 3 x 0.27 + 4 x 0 .09 + 5 x 0.05

μ =2.23

$\sigma_x^2= \sum x^2\times P(x)-(\sum x.P(x))^2$

$\sigma_x^2= 0^2\times 0.05+ 1^2\times 0.27+ 2^2\times 0.27+ 3^2\times 0.27+ 4^2\times 0.09+5^2\times 0.05-2.23^2$

$\sigma_x^2= 1.49$

$\sigma_x= \sqrt{\sigma_x^2}$

$\sigma_x=1.22$

7 0

3 years ago