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
castortr0y [4]
3 years ago
5

What is 645 rounded to the nearest ten

Mathematics
1 answer:
sergiy2304 [10]3 years ago
3 0
650 because 5 or greater in the 1's place will bump it up
You might be interested in
What does this equal? 4x+5=12-2x
Harman [31]
4x+5=12-2x
Answer: x=1.1666666 and so on
8 0
3 years ago
Read 2 more answers
You have $28, and you want to get half-dollar coins from the bank to give to children who come into your store. What is the most
Ray Of Light [21]
E, 56, because you have 28 dollars, and you have to multiply that by two to get half dollars. 28*2=56.
7 0
3 years ago
Read 2 more answers
Find the indicated probability or percentage for the sampling error. The distribution of weekly salaries at a large company is r
Flauer [41]

Answer:

The probability that the sampling error made in estimating the mean weekly salary for all employees of the company by the mean of a random sample of weekly salaries of 80 employees will be at most $75 is 0.9297.

Step-by-step explanation:

According to the Central Limit Theorem if we have a non-normal population with mean <em>μ</em> and standard deviation <em>σ</em> and appropriately huge random samples (<em>n</em> > 30) are selected from the population with replacement, then the distribution of the sample means will be approximately normally distributed.

Then, the mean of the distribution of sample means is given by,

\mu_{\bar x}=\mu

And the standard deviation of the distribution of sample means is given by,

\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}

The information provided is:

\mu=\$1000\\\sigma=\$370\\n=80

As <em>n</em> = 80 > 30, the central limit theorem can be used to approximate the sampling distribution of sample mean weekly salaries.

Let \bar X represent the sample mean weekly salaries.

The distribution of \bar X is: \bar X\sim N(\$1000,\ \$41.37)

Now we need to compute the probability of the sampling error made in estimating the mean weekly salary to be at most $75.

The sampling error is the the difference between the estimated value of the parameter and the actual value of the parameter, i.e. in this case the sampling error is, |\bar X-\mu|= 75.

Compute the probability as follows:

P(-75

                                     =P(-1.81

Thus, the probability that the sampling error made in estimating the mean weekly salary for all employees of the company by the mean of a random sample of weekly salaries of 80 employees will be at most $75 is 0.9297.

3 0
3 years ago
If f(x) = x^2- 6 and g(x) = 2x – 1, determine the value of (gºf)(-3).
k0ka [10]
I’m not too sure if I did it correct, but the answer I got was -6x^2+36. I just assumed you’d solve it as usual and then multiply (-3) after distributing-2 to x^2-6. Hope this helps.

5 0
2 years ago
The school buses at a middle school each hold 38 students. The school has, b, buses.
mel-nik [20]

Answer:

38bs

Step-by-step explanation:

multiply the number of students that each bus can hold by the no of buses 38s×b=38bs

8 0
3 years ago
Other questions:
  • In the general linear equation, y = bx + a, what is the value of b called?
    13·1 answer
  • Which are equivalent expressions? Check all that are true. 11a + 12b = 23ab
    7·1 answer
  • I have to identify the slop and the y intercept.<br> 3x-y=5 I have to find M and B
    14·2 answers
  • A recipe calls for 2 cups of flour ,1 cup of sugar, and 1/2 cup butter. how many cups of flour are needed to mix with each cup o
    7·1 answer
  • What is the sum of seven and eight
    13·2 answers
  • 75 is what percent of 350
    8·2 answers
  • What has ears but can not hear?
    7·2 answers
  • For this question, any answer that is not a whole number should be entered as a fraction in simplest form, using / as the fracti
    5·1 answer
  • Which rule describes the relationship between the input and output pairs in the following table?
    11·1 answer
  • Write 615000 in scientific notation​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!