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
Alex73 [517]
3 years ago
11

What number to the 3rd power makes 729?

Mathematics
2 answers:
Alika [10]3 years ago
8 0
9 to the third power is 729
9*9 = 81
81*9= 729
belka [17]3 years ago
7 0
?^3 = 729
⇒ ?= ∛(729)
⇒ ?= 9

The final answer is 9~
You might be interested in
For the function y = -2+5 sin<br> (x-2)<br> 12<br> what is the maximum value?
Arisa [49]
The maximum value it going to be 12 which will be 16 in the end that is going to be corrrct
7 0
3 years ago
PLEASE HELP ASAP!!! Take 2y 2 - 3y - 5 from y 3 - 6y 2 + 5y. Select the correct answer.
ss7ja [257]

Answer:

(D) y³ - 8y² +8y +5

Step-by-step explanation:

y³ - 6y²+ 5y - (2y²- 3y - 5 ) = y³ - 6y² + 5y - 2y² + 3y +5 = y³ - 8y² +8y +5

8 0
3 years ago
4% of what days is 56 days
leva [86]
The answer would be 14 because 4x__=56 ? 4 x14 =56
6 0
3 years ago
Concerns about the climate change and CO2 reduction have initiated the commercial production of blends of biodiesel (e.g. from r
natta225 [31]

Answer:

a) 99% of the sample means will fall between 0.933 and 0.941.

b) By the Central Limit Theorem, approximately normal, with mean 0.937 and standard deviation 0.0015.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

(a) If the true mean is 0.9370 with a standard deviation of 0.0090 within what interval will 99% of the sample means fail?

Samples of 34 means that n = 34

We have that \mu = 0.937, \sigma = 0.009

By the Central Limit Theorem, s = \frac{0.009}{\sqrt{34}} = 0.0015

Within what interval will 99% of the sample means fail?

Between the (100-99)/2 = 0.5th percentile and the (100+99)/2 = 99.5th percentile.

0.5th percentile:

X when Z has a pvalue of 0.005. So X when Z = -2.575.

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

-2.575 = \frac{X - 0.937}{0.0015}

X - 0.937 = -2.575*0.0015

X = 0.933

99.5th percentile:

X when Z has a pvalue of 0.995. So X when Z = 2.575.

Z = \frac{X - \mu}{s}

2.575 = \frac{X - 0.937}{0.0015}

X - 0.937 = 2.575*0.0015

X = 0.941

99% of the sample means will fall between 0.933 and 0.941.

(b) If the true mean 0.9370 with a standard deviation of 0.0090, what is the sampling distribution of ¯X?

By the Central Limit Theorem, approximately normal, with mean 0.937 and standard deviation 0.0015.

6 0
3 years ago
Can someone take 3 min for there time and help me with this please??
seropon [69]
Since the left side of the equation says f(5), then plug in 5 for x. 

So, it is: 
              
-4|5| + 3
= -20 + 3
= 23 
4 0
3 years ago
Other questions:
  • How do you find the absolute value of a positive number ?
    14·2 answers
  • Daniel drives his car 374 miles using 22 gallons of gas. How many miles per gallon does his car get?
    9·2 answers
  • Two thirds a number plus 4 is 7
    13·1 answer
  • Compare ratio for 4/5 and 3/7​
    10·1 answer
  • Which of the following transformations will make coincide with ?
    6·1 answer
  • You deposit 1600 in a bank Find the balance after 3 years if the account pays 4%annual interest yearly.
    13·1 answer
  • HELP I WILL MARK BRAINLIEST
    13·1 answer
  • Given f(x) = 5 – 4x and g(x) = 3x - 2, what is the value of g(- 5)?
    11·1 answer
  • Calculate the perimeter of a square with a side length of 3ft
    13·1 answer
  • Which statement about proportional relationships is false?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!