1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ymorist [56]
3 years ago
5

What is the smallest number by which 6400 must be multiplied to make a perfect cube?​

Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
3 0

Answer:

10

Step-by-step explanation:

i looked it up to be sure but if wrong very sorry.

You might be interested in
Solve each expression.reduce to simplest form of 5/8x4/5
Butoxors [25]
5/8 * 4/5
= 1/8 * 4/1
= 1/4 * 2/1
1/2 * 1/1

Final answer = 1/2
4 0
3 years ago
Read 2 more answers
How do you graph the equation y=|x|?
Rufina [12.5K]

graph looks like the letter v

2 around x means no matter what value x is y will be positive

plot points would be

(-2,2) (-1,1) (0,0) (1,1) (2,2)

8 0
3 years ago
What is the 5004300 in standard form
Svet_ta [14]

Answer:

In standard form,

5004300. Five Millon four thousand and three hundred.

6 0
3 years ago
Read 2 more answers
Do bonds reduce the overall risk of an investment portfolio? Let x be a random variable representing annual percent return for V
ryzh [129]

Answer:

a.

∑x=109, ∑x²=4173, ∑y=87, ∑y²=2083.

b.

sample mean for x=10.9.

variance for x=331.66.

standard  deviation for x=18.21.

sample mean for y=8.7.

variance for y=147.34.

standard  deviation for y=12.14.

c.

75% Chebyshev interval around the mean for x values

-25.52,47.32

75% Chebyshev interval around the mean for y values

-15.58,32.98

The interval shows that Vanguard Balanced index has smaller spread.

d.

coefficient of variation for x=167.06%

coefficient of variation for y=139.54%

Smaller CV means lower risk so, smaller CV is better.

Step-by-step explanation:

Note: ALL ANSWERS ARE ROUNDED TO TWO DECIMAL PLACES

a.

∑x=17+0+17+28+28+27+29−12−12−13=109,

∑x²=17²+0²+17²+28²+28²+27²+29²+(−12)²+(−12)²+(−13)²=4173,

∑y=14−2+27+18+20+11+14−2−3−10=87,

∑y²=14²+(−2)²+(27)²+(18)²+(20)²+(11)²+(14)²(−2)²+(−3)²+(−10)²=2083.

b.

sample mean for x=∑x/n=109/10=10.9.

variance x=\frac{sum(x-mean )^2}{n-1}

x-mean

6.10

-10.90

6.10

17.10

17.10

16.10

18.10

-22.90

-22.90

-23.90

sum(x-mean)²=6.10 ²+(-10.90 )²+6.10 ²+17.10² +17.10²+ 16.10² +18.10² +(-22.90 )²+(-22.90 )²+(-23.90 )²=2984.9

variance  x=\frac{2984.9}{9}

Variance for x=331.66.

standard  deviation for x=√variance for x

standard  deviation for x=√331.66

standard  deviation for x=18.21.

sample mean for y=∑y/n=87/10=8.7.

variance y=\frac{sum(y-mean )^2}{n-1}

y-mean

5.30

-10.70

18.30

9.30

11.30

2.30

5.30

-10.70

-11.70

-18.70

sum(y-mean)²=5.30 ²+(-10.70 )²+18.30² +9.30² +11.30² +2.30² +5.30² +(-10.70 )²+(-11.70 )²+(-18.70 )²=1326.1

variance  y=\frac{1326.1}{9}

variance for y=147.34.

standard  deviation for y=√variance for y

standard  deviation for y=√147.34

standard  deviation for y=12.14.

c.

75% Chebyshev Interval

mean±k standard deviation

We have to find value of k.

1-\frac{1}{k^{2} } =0.75

1-0.75 =\frac{1}{k^{2} }

\frac{1}{k^{2} }=0.25

k²=4

k=2

so, 75% Chebyshev Interval for x

10.9±2*(18.21)

[-25.52,47.32]

75% Chebyshev Interval for y

8.7±2*(12.14)

[-15.58,32.98]

The interval shows that Vanguard Balanced index has smaller spread.

d.

CV for x=\frac{S.Dx}{meanx} *100

CV for x=\frac{18.21}{10.9} *100

CV for x=167.06%

CV for y

CV for y=\frac{S.Dy}{meany} *100

CV for y=\frac{12.14}{8.7} *100

Cv for y=139.54%

The smaller CV shows the smaller amount of risk so, smaller CV is better.

4 0
3 years ago
(02.01 MC) A talent show broadcast on television asks viewers to call in to vote for their favorite act. Describe how the design
AveGali [126]

Answer:

Option D is correct.

A voluntary response error was made in this design. This type of sampling only targets those who are passionate about a specific act and call in to vote; it is not a good representation of the population.

Step-by-step explanation:

When humans are given the choice whether to participate in a survey like in this question, most often than not, the survey becomes biased.

This is because only the people or set of people who feel strongly the most about the subject matter of the poll will participate in the survey. This favours the group that disagrees as this group, if given the choice to express their opinion, will most likely be the set of people that will readily express their discontent.

Discontent is more visibly and strongly expressed in humans.

In order to remove this bias, people should have been chosen at random and their responses recorded.

Hope this Helps!!!

5 0
3 years ago
Other questions:
  • (4,3),(3.3),(4,-1),(4,8) function or not funtion?
    5·1 answer
  • How many solutions does this have ?
    14·2 answers
  • Hey, can someone help me with this?
    15·1 answer
  • Which pair of numbers is the greatest common factor 15?​
    12·1 answer
  • Mr grant needs 30 pieces of felt he can buy them in packs of 10 or as single pieces what are the different ways mr
    12·1 answer
  • Which of the following is not a geometric sequence?
    9·2 answers
  • HELP PLEASE, if you can answer number 2 and 3 also I would appreciate it
    12·1 answer
  • HELP PLZZZZZ !!!!!!!! I DON'T UNDERSTAND
    8·2 answers
  • The last option is -4, -3
    12·1 answer
  • Divide.<br><br> 52.98 ÷ 10³<br><br> Enter your answer as a decimal in the box. help!!!!!!!!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!