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
IrinaK [193]
3 years ago
7

f one pump can inflate an air mattress in 21 minutes and a second pump can inflate the same mattress in 42 ​minutes, find the am

ount of time that would be needed for the two pumps working together to inflate the mattress.
Mathematics
1 answer:
Schach [20]3 years ago
3 0

Answer:

14 minutes

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, what I do for these problems is do 1/x with x being the amount of time given.

1/21+1/42=3/42

3/42=1/14

Together, they would take 14 minutes!

(っ◔◡◔)っ ♥ Hope this helped! Have a great day! :) ♥

You might be interested in
Use the probability distribution to complete parts (a) and (b) below.
Vitek1552 [10]

this could take a while to think about but uhh i dont know,

8 0
2 years ago
Help no explanation just answers plz, theres no multi choice
maxonik [38]

Answer:

A b or c

Step-by-step explanation:

Easy shahhshhshs free points hehe

4 0
3 years ago
Gary had a 40% discount for new tires. The sale price of a tire was $96.25. What was the original price of the tire? Round to th
EastWind [94]

If the price after the discount is subtracted is $96.25 then this is what you do

u times 0.40 x 96.25 which is 38.5 so since you are wanting to know what the price was before the discount you would add 38.5 to 96.25 and when you do that your answer is 134.75

but if you are just trying to get the discount from 96.25 you subtract 38.5 from 96.25

8 0
3 years ago
Help plz I’ll give brainliest and I’m struggling with this problem
hodyreva [135]

The line is starting from right side and goes thorough left .

Means

  • Its starts from 1st Quadrant and goes to 3rd Quadrant.(+ve to -ve)
  • Y is infinite

Hence

The solution is

\\ \sf\longmapsto (0,\infty]

6 0
2 years ago
Amelie found the solutions of the equation x2 − 1x = 42 to be 6 and −7. Explain why this answer is incorrect. Then, find the cor
cupoosta [38]
I dont know how to solve it but since the answer shows as 6 and -7, if you plug it in as x values, one tiem as 6 and second time as -7 it doesnt equal 42
7 0
3 years ago
Other questions:
  • PLEASE HELP IM DUMB AND I NED THIS ASAP
    12·1 answer
  • 0.056 divided by 0.004
    7·2 answers
  • Help me figure this out
    13·1 answer
  • Which set of ordered pairs is linear?
    5·1 answer
  • HELP PLEASE I HAVE 5 MINUTES PLEASE HELP! (IGNORE THE HIGHLIGHTED ANSWER I PRESSED IT ON ACCIDENT)
    13·2 answers
  • Help me please!!!!!!!!
    5·1 answer
  • What is 4613203.125 rounded as a whole number​
    11·1 answer
  • Can u give me the answer ​
    13·1 answer
  • 2*9+2x^3/1+10-4+20+3
    12·1 answer
  • BRAINLIEST Ill give brainiest Find the perimeter of a quadrilateral with vertices at C (−2, 1), D (2, 4), E (5, 0), and F (1, −3
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!