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
Bess [88]
3 years ago
14

Can any one answer everything

Mathematics
1 answer:
Roman55 [17]3 years ago
3 0
I don’t really understand for question 11 to 13

You might be interested in
The average amount of time that students use computers at a university computer center is 36 minutes with a standard deviation o
frosja888 [35]

Answer:

2119 students use the computer for more than 40 minutes. This number is higher than the threshold estabilished of 2000, so yes, the computer center should purchase the new computers.

Step-by-step explanation:

Problems of normally distributed samples are 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.

In this problem, we have that:

\mu = 36, \sigma = 5

The first step to solve this question is finding the proportion of students which use the computer more than 40 minutes, which is 1 subtracted by the pvalue of Z when X = 40. So

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

Z = \frac{40 - 36}{5}

Z = 0.8

Z = 0.8 has a pvalue of 0.7881.

1 - 0.7881 = 0.2119

So 21.19% of the students use the computer for longer than 40 minutes.

Out of 10000

0.2119*10000 = 2119

2119 students use the computer for more than 40 minutes. This number is higher than the threshold estabilished of 2000, so yes, the computer center should purchase the new computers.

8 0
3 years ago
What is 1 + 1<br><br> Please give a detailed answer and I’ll crown
Ksivusya [100]

Answer:

1+1+2

1/10x10=1

1/10x10=1

(1/10x10)+(1/10x10)+2

or...

0.5x2=1

0.5x2=1

(0.5x2)+(0.5x2)=2

hope this helps lol

6 0
2 years ago
Read 2 more answers
The number of Liters remaining in a 100 Liter tank that is draining at a rate of 4 Liters per minute for m
serg [7]

Answer:

Big fella

Step-by-step explanation:

100-4 x m

3 0
3 years ago
Read 2 more answers
Is the following number rational or irrational? -3+π
enyata [817]

Answer:

B, irrational

Step-by-step explanation:

We know that π is irrational, since it can not be written as a division between  natural numbers (a sub class of Real numbers called N), it's value is 3,1415(a whole bunch of decimals after this)

If you remove the decimal part of π by subtracting the integer part of it, that is the number 3. the result will still being and irrational number

Since π= 3(the rational part) +0,1415... (the irrational part)

The resut of π-=3= 0,1415...

3 0
3 years ago
A small restaurant named the Pizza Palace had a food critic try their pizza and wrote them a very, very bad review. The function
I am Lyosha [343]

The statement which describes what the equation tells is; The number of customers they have prior/before the review is; 500 customers.

  • The number of customers they have 2 months after the review is; 222.22 customers.

<h3>Exponential functions</h3>

According to the given function;

  • The intercept of the function represents the number of customers the restaurant has prior to the review.

This means the number of customers they have prior/before the review (at m=0) is; 500 customers.

Additionally, after 2 months of the review;

  • C = 500 × (2/3)^2

  • C = 500 × 0.44

C = 222.22 customers

Read more on exponential functions;

brainly.com/question/2456547

4 0
2 years ago
Other questions:
  • somebody read 50 pages of a book in 50 minutes she reads at a constant rate how many pages did she read per minute
    14·1 answer
  • I need a answer fast please!
    8·1 answer
  • You buy a pair of shoes<br>for $58.75, what is the<br>Price including tax?<br>(tax is 7.5%)​
    11·2 answers
  • Determine value of y
    7·1 answer
  • (5 points) A street light is at the top of a 18 ft pole. A 5 ft tall girl walks along a straight path
    14·1 answer
  • If a ball is thrown in the air with a velocity 52 ft/s, its height in feet t seconds later is given by y = 52t - 16t^2. Find the
    7·1 answer
  • How do you solve 3 = x + 3 + 6x?
    6·2 answers
  • A principal of $2000 is invested at 7% interest, compounded annually. How much will the investment be worth after 10 years? Use
    9·1 answer
  • 6 + (8 ÷ 2) - 2 + (4 - 1)
    6·1 answer
  • What are the equations of the asymptotes for the function? f(x)=−3/x−1 −1
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!