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
n200080 [17]
4 years ago
9

They ratio of pencils to erasers is 4:1 if their are 20 pencils how many erasers are there

Mathematics
1 answer:
velikii [3]4 years ago
8 0
Let x be the number of erasers
4 = 20
1 = x

4x = 20

x = 5
 therefore there are 5 number of erasers 
You might be interested in
-0.46x+0.16x=6.6<br><br> Thank you!
Naily [24]
First you add like terms in which this case is -.46x and .16x which equals -.3x then divide 6.6 into -.3 which is -22. x = -22
3 0
3 years ago
James was trying to sleep one night but there was too much noise around him. His clock ticked every
g100num [7]

Answer:

<em>It will occur zero times between midnight and one o'clock.</em>

Step-by-step explanation:

<u>Least Common Multiple (LCM)</u>

Three events keep James from sleeping: his clock ticking every 20 seconds, a tap dripping every 15 seconds, and his dog snoring every 27 seconds.

All three events happened together at midnight. They will happen together again the first time the numbers 20, 15, and 27 have a common multiple. This is the LCM.

List the prime factors of each number:

20: 2,2,5

15: 3,5

27: 3,3,3

Now multiply all the factors the maximum number of times they appear:

LCM=2*2*3*3*3*5=540

(a) All the events will happen together again after 540 minutes.

(b) Since 540 minutes = 9 hours, this event won't happen again until 9 am. Thus, it will occur zero times between midnight and one o'clock.

4 0
3 years ago
Helppp! (m−3+4n)⋅(−8)
-BARSIC- [3]

Answer:

-8m + 3 - 32n

Step-by-step explanation:

Distributive Property

-8m + 3 - 32n

4 0
3 years ago
HELP LOL! IS THIS PROPORTIONAL EASY POINTS
goblinko [34]

Answer:

nonproportional

Step-by-step explanation:

nonproportional is what i think

4 0
3 years ago
Read 2 more answers
Endpoint: (1,7), midpoint: (-10,10)
algol [13]

The answer is (-21, 13) for The second endpoint.  

Let's start by calling the known endpoint L and the unknown K. We'll call the midpoint M. In order to find this, we must first note that to find a midpoint we need to take the average of the endpoints. To do this we add them together and then divide by 2. So, using that, we can write a formula and solve for each part of the k coordinates. We'll start with just x values.

(Kx + Lx)/2 = Mx

(Kx + 1)/2 = -10

Kx + 1 = -20

Kx = -21

And now we do the same thing for y values

(Ky + Ly)/2 = My

(Ky + 7)/2 = 10

Ky + 7 = 20

Ky = 13

This gives us the final point of (-21, 13)

5 0
3 years ago
Other questions:
  • A logarithmic function is an appropriate model because, for evenly spaced y-values, the ___ of consecutive x-values is constant.
    14·2 answers
  • 12 points, please help me!
    6·1 answer
  • Consider the rational expression x2+6x−2/6x−5 .
    6·2 answers
  • While on a car trip with her family,Erin saw a sign that read,"Amarillo 100 miles,Lubbock 80 miles". She concluded that the dist
    8·2 answers
  • Please help! I can't figure this out
    5·2 answers
  • Ll<br>3. first six terms of 3 + 9 + 27 + ...​
    13·1 answer
  • Nine years ago, Tarah opened a savings account with her bank. She started with a balance of $359 and has not made any withdrawal
    10·1 answer
  • Two similar
    6·1 answer
  • Find the measure on z.
    10·1 answer
  • 50 is ____________ times as large as 5.
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!