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
Soloha48 [4]
3 years ago
11

A copy machine makes 253 copies in 5 minutes and 45 seconds. How many copies does it make per minute?

Mathematics
1 answer:
Tomtit [17]3 years ago
6 0

Answer:

Step-by-step explanation:

it makes 253 copies in 5 mins 45 seconds

that is to say, 253 copies in 345 seconds

In 1 minute (60 seconds) it will make X copies.

Lets draft an equation to easily express and simplify the problem.

253 copies = 345 seconds

X copies = 60 seconds

lets cross multiply and solve for X

Theefore:

x * 345 = 254 * 60

345x = 15,240

divide through by 345

x = 15240 / 345

x = 44.17

therefore, the copying machine makes approximately 44 copies per minutes

You might be interested in
I'm confused, please help. :/
vampirchik [111]

uh i did this wrong so uh just ignore what i said

5 0
3 years ago
Read 2 more answers
From a large number of actuarial exam scores, a random sample of scores is selected, and it is found that of these are passing s
Mnenie [13.5K]

<u>Supposing 60 out of 100 scores are passing scores</u>, the 95% confidence interval for the proportion of all scores that are passing is (0.5, 0.7).

  • The lower limit is 0.5.
  • The upper limit is 0.7.

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of \alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of \frac{1+\alpha}{2}.

60 out of 100 scores are passing scores, hence n = 100, \pi = \frac{60}{100} = 0.6

95% confidence level

So \alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so z = 1.96.

The lower limit of this interval is:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6 - 1.96\sqrt{\frac{0.6(0.4)}{100}} = 0.5

The upper limit of this interval is:

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6 + 1.96\sqrt{\frac{0.6(0.4)}{100}} = 0.7

The 95% confidence interval for the proportion of all scores that are passing is (0.5, 0.7).

  • The lower limit is 0.5.
  • The upper limit is 0.7.

A similar problem is given at brainly.com/question/16807970

5 0
3 years ago
Can someone help me
garri49 [273]

Answer:

C. 13,248 square units

Step-by-step explanation:

You gotta find measure of bottom leg of the triangle which 92

Then add that to 100

92 + 100 = 192

You multiply 192 by 69

192  x  69 = 13248

7 0
3 years ago
Please Help!! I will give Brainliest to the correct answer!!
Likurg_2 [28]

Answer:

84.5

Step-by-step explanation:

12.3(3)+11.9(4)=84.5

3 0
3 years ago
Read 2 more answers
What is the area of the parallelogram?<br><br>Any help will be appreciated. Thank you!☺️​
andreev551 [17]

Answer:

40

Step-by-step explanation:

A = bxh

=(8)(5)

=40

4 0
3 years ago
Read 2 more answers
Other questions:
  • Write an equation for a circle with<br> a center at (9 -2) and has a<br> radius of 7.
    10·1 answer
  • Help please (10 points)
    13·1 answer
  • What is 69 x 420 <br> Can you sub to me please?
    12·2 answers
  • A dog ran along a fence 10 times. The fence is 5 feet 3 inches long. How far did the dog travel? (12 inches = 1 foot
    10·1 answer
  • Find the domain and range of f(x)= 2|x+2|-8​
    7·1 answer
  • Which is a logarithmic statement for 10^3.5=3162.28?
    15·1 answer
  • Pls help, will give brainlist if u give me the answer!!
    13·1 answer
  • Find the length of the side x in the simplest radical form with a rational denominator
    6·1 answer
  • Can someone help me with this ASAP please ​
    11·2 answers
  • What type of function is represented by the table of values below?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!