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
Alchen [17]
3 years ago
8

Change 1/7 / 4/21 to a ratio?​

Mathematics
1 answer:
sergeinik [125]3 years ago
6 0

Answer:

3:4

Step-by-step explanation:

(1/7)/(4/21) = (1/7)×(21/4) = 3/4 = 3:4

You might be interested in
Janet can do a job in 3 hours, and Garry can do the same job in 2 hours. If Janet works for 1 hour before Garry comes to help, h
lidiya [134]

Answer:

48 minutes

Step-by-step explanation:

Given that:

Time taken by Janet = 3 hours

Janet's rate = 1/3 job / hour

Time taken by Garry = 2 hours

Garry's rate = 1/2

Rate of working together :

1/3 + 1/2 = (2 + 3) /6 = 5/6 job/hour

If Janet works for one hour before Garry joins ;

1/3 of the job has been done by Janet

1 - 1/3 = 2/3 of the job left

Hence to finish the job together, it will take :

Fraction of JOB left ÷ rate of working together

(2/3 ÷ 5/6)

= 2 /3 * 6/5

= 12 / 15

= 4 / 5 hours

To minutes

(4/5) * 60

= 240/5

= 48 minutes

8 0
3 years ago
Read 2 more answers
A box contains 3 plain pencils and 5 pens. A second box contains 2 color pencils and 2 crayons. One item from each box is chosen
babymother [125]

Answer

5/8 and 1/2

Step-by-step explanation:

3 0
3 years ago
I need help pls !!!!
Phantasy [73]

Answer:

See Below

Step-by-step explanation:

Ok, so in this problem you have some vertical angles. These are angles oppisites from each other. Therefore; d = 52, f = ?, and e = 77. All the angles added together will = 360. Let's add up the angles we know and subtract the whole from 360.

52 + 52 + 77 + 77 = ?

104 + 154 = 258

360 - 258 = 102

Since we know that f and the unlabeled angle are the same, we need to divide this total between the two of them.

102/2 = 51

Therefore;

d = 52

e = 77

f = 51

3 0
3 years ago
HELP ME PLEASE! IF ANY OF YOU CAN JUST TAKE THE TIME TO HELP ME, I WOULD APPRECAITE IT. PLEASE, ASAP! Marsha created this scale
GaryK [48]
The answer is 1.33in, 2in. Any questions please just ask! Thanks!
7 0
3 years ago
Read 2 more answers
given the diagram below, explain how you would determine the opposite, adjacent, and hypotenuse side from the given 35° angle. (
taurus [48]

Answer:

opposite=8.402402490459  ,adjacent is already given=12, hypotenuse=14.64929507

Step-by-step explanation:

to do this you will have to use the law of sines. the first thing you need to do is solve for the unknown angle by subtracting 90+35 from 180. so you get the equation 180-(90+35)=55. now that you know all your angles, you can use the law of sines to solve for the unknown sides. the law of sines state that a/sin(A)=b/sin(B). if you substitute the values of 12 and 55 into the equation, since you know those sides, you can then find a ration that you can use to find the other sides, 12/sin(55)=b/sin(B), which is equal to, 14.649... Next you pick whichever side you want to solve for next, and plug in its opposite angle (i would solve for the other leg, because then you can use pythagorean theorem to solve for the hypotenuse, so i will demonstrate that way) plug in the angle 35, since it is opposite the leg and then finish for the variable, 14.649...=b/sin(35). once you have the sin, you can multiply it by the 14.649 to get your side, 14.649...*.5736...=8.402...=b. now you have your two legs, so you can use a^2+b^2=c^2 to solve for the hypotenuse. once you plug in your values it should look like this, 12^2+8.402...^2=c^2. which simplifies down to 214.602...=c^2. so you take the square root of both sides to find c, which equals 14.649. you can check that by seeing if 14.649 is bigger then the other two sides, which it is. This number should look familiar because it was the ratio we got when we divided 12 by the sin(55). the reason that happened is because the sin(90) is 1, the 14.649*1=14.649.

If you have any questions, leave them in the comments and will try to answer them, if this helped, pls give brainliest.

5 0
3 years ago
Other questions:
  • Mattis saving to buy a new motorcycle. If he deposits $50 at the end of each month in an account that pays an annual interest ra
    9·1 answer
  • The measure of angle A
    15·1 answer
  • Write a function rule that gives the total cost c(p) of p pounds of sugar if each pound costs $0.59.
    9·1 answer
  • PLEASE HELP A boat travels downstream 10 miles and returns to the starting point in 2
    9·1 answer
  • What’s the answer for this equation?<br><br> 1/2 * (1, 341 + 625)
    15·2 answers
  • Identify the transformation shown by the 2 lines on the graph as a dilation or translation.
    10·1 answer
  • Question Progress
    12·1 answer
  • Keisha, Boris, and Jose sent a total of 126 text messages over their cell phones during the weekend. Boris sent 4 times as many
    5·1 answer
  • PLEASE HELP FAST!! WILL MARK AS BRAINLIEST IF GIVEN GOID ANSWER....​
    11·1 answer
  • I need help to do this
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!