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
statuscvo [17]
3 years ago
6

this year,15 of the 40 computers in the math lab are not new. which representation is equivalent to the fraction of computers th

at are new.​
Mathematics
1 answer:
just olya [345]3 years ago
3 0

Answer:

5/8

Step-by-step explanation:

Subtract the total computers from the old computers.

40-15=25

Then put the number of new computers over the total computers

25/40

Then, simplify

5/8

You might be interested in
Can somebody tell me how to solve these kind of problems?
Ugo [173]

Answer: 918km^2

Step-by-step explanation:

area(a): 1700km^2\\percentage(p): 5.75 = \frac{5.75}{100}=0.0575\\years(y): 8

Let x be the new dimension of the area;

x=a-(a*p*y)

x=(1700km^2)-(1700km^2*0.0575*8)\\x=1700km^2-782km^2\\x=918km^2

6 0
3 years ago
Given 3X - Y = -13 solve for y
Yanka [14]
Maybe u should do inverse operation on both sides idk but just try it
4 0
3 years ago
2.25 meters long and 1.8 meters wide. What is the area of the blanket
ahrayia [7]
The area of the blanket is 4.05 sq. meters.
7 0
3 years ago
In a recent study of 42 eighth graders, the mean number of hours per week that they watched television was 19.6. Assume the popu
olya-2409 [2.1K]

Answer:

19.6-2.42\frac{5.8}{\sqrt{42}}=17.43    

19.6+2.42\frac{5.8}{\sqrt{42}}=21.77    

And the best option for this case would be:

a. (17.5, 21.7)

Step-by-step explanation:

Information given

\bar X= 19.6 represent the sample mean

\mu population mean

\sigma= 5.8 represent the population deviation

n=42 represent the sample size  

Confidence interval

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

The degrees of freedom, given by:

df=n-1=42-1=41

Since the Confidence is 0.98 or 98%, the significance would be \alpha=0.02 and \alpha/2 =0.1, and the critical value would be t_{\alpha/2}=2.42

Replacing we got:

19.6-2.42\frac{5.8}{\sqrt{42}}=17.43    

19.6+2.42\frac{5.8}{\sqrt{42}}=21.77    

And the best option for this case would be:

a. (17.5, 21.7)

8 0
3 years ago
What is the key idea of this passage ​
Luda [366]
You have to insert the passage first
7 0
3 years ago
Other questions:
  • WILL BRAINLY4/8*3/6 JUST ANSWER CORECTLY AND EXPLAIN
    9·1 answer
  • 200 is 398 times j make an equation
    5·1 answer
  • What would be the value of $100 after 10 years if you earn 11 percent interest per year
    7·1 answer
  • in 2 h, kelly laid new floor tile over 1/5 of the room. when she was joined by annette, the rest of the work was completed in 3h
    13·1 answer
  • To get to school each morning, Luis takes a scooter 12.97 kilometers and a car 5.63 kilometers. In total, the journey takes 51.4
    13·1 answer
  • In the diagram, polygon ABCD is flipped over a line of reflection to make a polygon with vertices at A′, B′, C′, and D′. Points
    14·2 answers
  • I need help :(( <br>.............................​
    8·1 answer
  • Marking brainliest <br><br> Someone use this as a sentence, and pls don’t use outside sources.
    10·1 answer
  • Can somebody help me with Find 15% of $25
    5·2 answers
  • 10-2 (2x+1) = 4 (x-2)
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!