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
lana66690 [7]
3 years ago
5

Person 1 can do a certain job in twenty-one minutes, and person 2 can do the same job in twenty-eight minutes. When completing t

he job together, which expression would be used to represent the amount of work done by person 1?
Mathematics
1 answer:
schepotkina [342]3 years ago
8 0
I hope this helps you



1/21+1/28=1/t


4/84+3/84=1/t


5/84=1/t


t=84/5


84/5 1



21 ?



?.84/5=1.21



?=5/4
You might be interested in
Which expression is not equal to the number 0? Group of answer choices 5 - 5 -8 - (-8) 6 - (-6) -7 + 7
Sedbober [7]
6 - (-6)
This is because two negatives make a positive, so you’ll be adding 6+6 which equals to 12 not 0
3 0
3 years ago
HELP ME PLEASE, it’s confusing
kakasveta [241]

The number at the end of the equation shifts the graph up or down.

Changing the 1/2 to a -2 would shift the graph down which would change the y-intercept.

The answer is D.

6 0
3 years ago
Read 2 more answers
Find f (-2).<br><br> f (x) = 5x
pochemuha
<h3>♫ - - - - - - - - - - - - - - - ~<u>Hello There</u>!~ - - - - - - - - - - - - - - - ♫</h3>

➷ Put -2 everywhere you see x:

f(-2) = 5(-2)

f(-2) = -10

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

7 0
3 years ago
Read 2 more answers
Which expression has a value of 20?
Mice21 [21]

Answer:

the fist one is equal to 20

8 0
3 years ago
A sequence can be generated ny using (look at image below)? someone please help:)
mixer [17]

Answer:

6, 24, 96, 384

Step-by-step explanation:

a₁ = 6

a₂ = 4 x a₁ = 4 x 6 = 24

a₃ = 4 x a₂ = 4 x 24 = 96

a₄ = 4 x a₃ = 4 x 96 = 384

8 0
3 years ago
Other questions:
  • The bill for the repair of a computer was $179. The cost for parts was $44, and the labor charge was $45 per hour. How many hour
    10·1 answer
  • About 42% of a paint mix is white a painter orders 18 gallons of the paint mix. How much of of it is white.
    6·2 answers
  • Given that a random variable X is normally distributed with a mean of 2 and a variance of 4, find the value of x such that P(X &
    5·1 answer
  • What is the difference of the polynomials [m²n²-7]-(mn+4)
    15·1 answer
  • Shelia rode her bike daily to get ready for a bike race.The following list shows the number of miles she rode each day of the we
    10·1 answer
  • Greatest common factor 10b^2 and 4a^3
    9·2 answers
  • John has four more buckles than dimes in his pocket, for a total of $1.25 which equation could be used to determine the number o
    12·1 answer
  • A soccer ball is placed 12 feet away from a goal post that measures 8ft high. You kick the ball and it hits the crossbar at the
    5·1 answer
  • Help me PLEASEEEEEEEEEEEEE
    11·1 answer
  • What is seven eighths minus one fourth
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!