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
notsponge [240]
3 years ago
15

How do u write 3 less than the product of 4 and a number

Mathematics
1 answer:
Sonja [21]3 years ago
6 0

The product of 4 and a number can be shown by either 4x or 4 * x

3 less means that you are subtracting

3 less than the product of 4 and a number - the answer would be 4x - 3


You might be interested in
If outliers are discarded, then the retirement savings by residents of Econistan is normally distributed with a mean of $100,000
zavuch27 [327]

Answer:

P(X>117000)=P(\frac{X-\mu}{\sigma}>\frac{117000-\mu}{\sigma})=P(Z>\frac{117000-100000}{20000})=P(z>0.85)

And we can find this probability using the complement rule and the normal standard table or excel:

P(z>0.85)=1-P(z

The firgure attached illustrate the problem

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the retirement savings of a population, and for this case we know the distribution for X is given by:

X \sim N(100000,20000)  

Where \mu=100000 and \sigma=20000

We are interested on this probability

P(X>117000)

And the best way to solve this problem is using the normal standard distribution and the z score given by:

z=\frac{x-\mu}{\sigma}

If we apply this formula to our probability we got this:

P(X>117000)=P(\frac{X-\mu}{\sigma}>\frac{117000-\mu}{\sigma})=P(Z>\frac{117000-100000}{20000})=P(z>0.85)

And we can find this probability using the complement rule and the normal standard table or excel:

P(z>0.85)=1-P(z

The firgure attached illustrate the problem

7 0
2 years ago
What times what equals 29 besides 29 times 1
Feliz [49]
<span>The answer is 1 times 29. Number 29 is a prime number, which means that its multiples are 1 and itself (29). 29 = 29 * 1. According to the commutative law, in addition and multiplication, numbers can be swapped but the result will remain the same: a+b=b+a or a*b=b*a. Therefore, 29 = 29 * 1 = 1 * 29. In other words, 29 times 1 equals 29 and 1 times 29 equals 29, too.</span>
7 0
2 years ago
Emily can ride her scooter 18 miles in 50 minutes. a)how long would it take for her to ride 4 miles? b)what is her unit rate in
Blizzard [7]

Answer:A) At this same rate (speed) how far can she ride in two hours?

B) how long would it take for her to ride 4 miles?

C) what is her unit rate in miles per hour?

Step-by-step explanation:pls mark me as brainest pls

5 0
3 years ago
HELP ME! RIGHT NOW!!
leva [86]
Since that angle all together is 180, 100 is 2z-10 and z is 55
7 0
3 years ago
Read 2 more answers
There are 20 dowels. All bevels are dowels. All dowels are swivels. There are 12 bevels. There are 30 swivels. How many swivels
Zina [86]

Answer:

10 swivels are neither bevels or dowels

Step-by-step explanation:

See the attached for explanation

7 0
3 years ago
Read 2 more answers
Other questions:
  • I think of a number double it and subtract 2 i get 9 using the statement above
    6·1 answer
  • A researcher took a random sample of 100 students from a large university. She computed a 95% confidence interval to estimate th
    5·1 answer
  • 4 divided by 3,476........i need help pls!
    7·1 answer
  • If it took mark 45 minutes to get to work and 35 minutes to get home. How long did she spend traveling to and from work?
    5·2 answers
  • A sociologist records the annual household income (in thousands of dollars) among a sample of families living in a high-crime ne
    7·1 answer
  • F(x)=3x^3-12x^2+9x what the factor<br>​
    15·2 answers
  • Is x÷9=-4 an expression or equation
    11·2 answers
  • K(n)=3n+2; Find k(0)
    10·1 answer
  • I need to find the area. please help
    13·2 answers
  • Solve for x.........
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!