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
Elden [556K]
2 years ago
5

The ratio 20mins to 1 hour can be written in the form 1:n find the value of n.

Mathematics
1 answer:
Sonbull [250]2 years ago
4 0

Answer:

1:3

n=3

Step-by-step explanation:

1 hour = 60 minutes

20:60

20÷20=1

60÷20=3

1:3

You might be interested in
The wildlife department has been feeding a special food to rainbow trout fingerlings in a pond. based on a large number of obser
Liono4ka [1.6K]
The normal distribution curve for the problem is shown below

We need to standardise the value X=405.5 by using the formula

z-score= \frac{X-Mean}{Standard Deviation}
z-score= \frac{405.5-402.7}{8.8} =0.32

We now need to find the probability of z=0.32 by reading the z-table

Note that z-table would give the reading to the left of z-score, so if your aim is to work out the area to the right of a z-score, then you'd need to do:

P(Z\ \textgreater \ z)=1 - P(Z\ \textless \ z)

from  the z-table, the reading P(Z\ \textless \ 0.32) gives 0.6255

hence, 
P(Z\ \textgreater \ 0.32)=1-0.6255=0.3475

The probability that the mean weight for a sample of 40 trout exceeds 405.5 gram is 0.3475 = 34.75%

7 0
3 years ago
Finding the inverse function for f(x)=1/x^2
Anna [14]

to get the inverse of any expression, we start off by doing a quick switcheroo on the variables and then solve for "y".

\stackrel{f(x)}{y}=\cfrac{1}{x^2}\implies \stackrel{\textit{quick switcheroo}}{x=\cfrac{1}{y^2}}\implies y^2=\cfrac{1}{x}\implies y=\sqrt{\cfrac{1}{x}}\implies \stackrel{f^{-1}(x)}{y}=\cfrac{1}{\sqrt{x}}

4 0
3 years ago
Elena rode her bike 2 miles in 10 minutes. She rode at a constant speed. Complete the table to show the time it took her to trav
Komok [63]

Answer:

0.2

Step-by-step explanation:

2/10 or 1/5

6 0
3 years ago
Read 2 more answers
Make d the subject of the formula h=d/3+2
Pani-rosa [81]
Answer: D=3(h-2)

Explanation —>
8 0
2 years ago
there are 3 times as many adults as children at a book fair what is the ratio of people at the book fair​
kakasveta [241]

Answer:

1:3

Step-by-step explanation:

There are 3 adults per 1 child at the book fair. I think this is right but im not 100% sure :)

3 0
3 years ago
Other questions:
  • Darius is a graphic designer he makes a sign for a company that has a width of 2 feet and a length of 2 feet 6 inches the compan
    9·1 answer
  • The graph represents the balance on Harrison’s car loan in the months since purchasing the car.
    6·2 answers
  • If f(x) = 2x^3– 5x+ 2, then what is the remainder when f(x) is divided by<br> X – 4?
    14·1 answer
  • Please help with this?
    8·1 answer
  • What is the distance, to the nearest hundredth, from (6, 5) to (-3, -8)?
    8·2 answers
  • 4. Sharlene walked 7 2/11
    9·1 answer
  • Solve for x when y=16.<br> 3x+7=y
    15·1 answer
  • 5% of eggs that are shipped arrive broken. If 14 eggs are broken, how many were shipped?
    9·2 answers
  • There were 8 finalists in the Atlantic County spelling bee and 12 finalists in the Ocean County spelling bee. If one finalist fr
    12·2 answers
  • It takes Evelyn, traveling at 36 mph, 45 minutes longer to go a certain distance than it takes Ricky traveling at 72 mph. Find t
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!