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
6

It takes a printer 10 hours to print the class schedules for all of the students in a college. A faster printer can do the job i

n 6 hours. How long will it take to do the job if both printers are used?
Mathematics
1 answer:
Naya [18.7K]3 years ago
8 0

Answer:

8 hours

Step-by-step explanation:

pretty sure

6 hours is in half and 10 hours is in half add it up and you get 8?

You might be interested in
People tend to evaluate the quality of their lives relative to others around them (Frieswijk et al., 2004). In one study, resear
Alborosie

Answer:

Step-by-step explanation:

Hello!

Research.

n=9 frail elderly were interview and compared to a fictitious person who was worse off then the interviewee, a life-satisfaction score was determined for each person.

18, 23, 24, 22, 19, 27, 23, 26, 25

Assuming that the population average score is μ= 20, the researchers think that the elderly in the sample are more or less satisfied than others in the general population.

a. You have the information of one sample, assuming this sample has a normal distribution and each elderly interviewed is independent, then the t-test of choice is a one-sample t-test.

b. and c. If you say that the elderly are "more or less" satisfied than the others, this means that they are either as satisfied as to the general population or not satisfied as to the general population. Symbolically:

H₀: μ = 20

H₁: μ ≠ 20

This is a two-tailed test, meaning, you will have two critical regions.

d.  

α: 0.05

Left critical value: t_{n-1;/\alpha 2} = t_{8; 0.025}= -2.306

Right critical value: t_{n-1;1-\alpha /2} = t_{8;0.975} = 2.306

e.

t_{H_0}= \frac{X[bar]-Mu}{\frac{S}{\sqrt{n} } } ~t_{n-1}

X[bar]= 23

S= 3

t_{H_0}= \frac{23-20}{\frac{3}{\sqrt{9} } }= 3

f.

Considering that the calculated t-value is greater than the right critical value, the decision is to reject the null hypothesis, so using a significance level of 5% you can conclude that the average life-satisfaction score of the elderly is different than 20.

I hope it helps!

7 0
3 years ago
Question 13 plz show ALL STEPS so I can learn thnx
evablogger [386]

9514 1404 393

Answer:

  a) (x³ -x² +x +2) +2/(x+1)

  b) (x² +2x -5) +6/(x+3)

Step-by-step explanation:

Polynomial long division is virtually identical to numerical long division, except that the quotient term does not require any guessing. It is simply the ratio of the leading terms of the dividend and divisor. As with numerical long division, the product of the quotient term and the divisor is subtracted from the dividend to form the new dividend for the next step.

The process stops when the dividend is of lower degree than the divisor.

In part (a), you need to make sure the dividend expression has all of the powers of x present. This means terms 0x³ and 0x² must be added as placeholders in the given dividend. They will become important as the work progresses.

7 0
3 years ago
Solve 18n - 7p-15n = 5p for n.<br> A n = 1<br> B. n=2p<br> C. n = 1/2<br> D. n=4p
andrey2020 [161]

Answer:

<h3>The answer is option D</h3>

Step-by-step explanation:

18n - 7p-15n = 5p

To solve for n first make n the subject

Group like terms

That's

18n - 15n = 5p + 7p

Simplify

3n = 12p

Divide both sides by 3 to make n stand alone

That's

3n/3 = 12p/3

We have the final answer as

<h2>n = 4p</h2>

Hope this helps you

5 0
3 years ago
Read 2 more answers
Find the area of the trapeziod 25 ft 20 ft 15 ft
Natalka [10]
The area of the trapeziod is 337.5

3 0
3 years ago
Please help and thank you
Fantom [35]

Answer:

e

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Cuanto es 5+2x=5x - 7
    8·1 answer
  • Can you help me on this. It is due today
    12·1 answer
  • A rectangle basin is being filled with water. The basin is 7 feet long, 12 feet wide, and 4 feet high. How much water is going t
    6·1 answer
  • What is 36/40 simplified
    7·2 answers
  • Determine if the expressions are equivalent: 7+ 7x; 7 x + 1/7
    12·1 answer
  • The equation x^2-9=0 has how many real solutions
    15·1 answer
  • Help please like really quick I will give brainliest (I don’t really know how to spell it) but yeah thanks :)
    13·2 answers
  • Painting crew bought 30 gallons of paint for a job the crew members use 10 gallons of paint per hour until they used all the pai
    15·1 answer
  • The lot is `41` feet wide. The dividers are each `6` feet wide. Calculate how wide each space should be.
    12·1 answer
  • If the function f(x) = x 2 has the domain {0, 1, 4, 9}, what is its range?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!