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
-BARSIC- [3]
3 years ago
11

Person 1 can do a certain job in fifteen minutes, and person 2 can do the same job in thirty minutes. When completing the job to

gether, which expression would be used to represent the amount of work done by person 1?
Mathematics
2 answers:
Vinil7 [7]3 years ago
8 0
The expression used to represent the amount of work done by person 1 is 1/15, whereas when it comes to person 2 it is 1/30.
You use 1/15 since it is the fifteenth of one hour. 
tester [92]3 years ago
8 0
Quantity = work × time
You might be interested in
Carly spend 10 hours a day working at her job what percentage of her day does she spend at work ?
AlladinOne [14]
10/24 x 100 = 41.66
Approximately 42% of her day
3 0
3 years ago
Read 2 more answers
What is the simplified expression for –3cd – d(2c – 4) – 4d?
kompoz [17]
<span>–3cd – d(2c – 4) – 4d
= </span><span>–3cd – 2cd + 4d – 4d
= -5cd

answer
</span><span>A:–5cd </span>
3 0
3 years ago
An analyst from an energy research institute in California wishes to precisely estimate a 99% confidence interval of the average
Lena [83]

Answer:

190

Step-by-step explanation:

Data provided in the question:

Confidence level = 99%

Therefore,

α = 1% = 0.01

[ from standard normal table ]

z-value for z_{\frac{\alpha}{2}}= z_{\frac{0.01}{2}}= = 2.58

Margin of error, E = $0.06

Standard deviation, σ = $0.32

Now,

n = (\frac{z_{0.005}\sigma}{E})^2

Here,

n is the sample size (or the minimum number of gas stations  )

on substituting the respective values, we get

= (\frac{z_{0.005}\sigma}{E})^2

= (\frac{2.58\times0.32}{0.06})^2

= 13.76²

= 189.3376 ≈ 190

Hence,

minimum number of gas stations that she should include in her sample is 190

5 0
3 years ago
What is a number that is greater then 50 but less then 100 and can be divided by 3
liq [111]

Answer: 60


Step-by-step explanation: 60 because if you do 3×20 You get 60 which is higher than 50 and lower than 100 :)


5 0
3 years ago
Read 2 more answers
Avery has 2 blue marbles. One sixth of Avery's marble are blue. How many marbles does Avery have?
katrin [286]

Answer:

Step-by-step explanation:

The equation

2 = (1/6)x represents this situation.

2 is 1/6 of some value.  In this case, the value is the total number of marbles.  2 represents 1/6 of the total number of marbles is how to read that equation in context.  Solve that equation for x

2 = (1/6)x  

12 = x           (multiply both sides by 6 to get rid of the fraction)

6 0
2 years ago
Other questions:
  • PLZ HURRY IT'S URGENT!!
    14·1 answer
  • Find the common difference for the following sequence and fill in the missing terms. Show all calculations. -12, __, 10, __, 32,
    10·2 answers
  • Five friends all brought some cakes with them when they met. Each of them gave a cake to each of the others. They then ate all t
    9·1 answer
  • Which inequality represents all values of X for which the product below is defined?
    14·1 answer
  • PLZ I REALLY NEED HELP Find the values of x and y in parallelogram PQRS
    14·1 answer
  • I WiLL GiVe BrAnYeSt
    5·1 answer
  • PLZ SHOW WORK THANKS! (OPEN TO SEE THE IMAGE) PLZ NO LINK PLZ
    6·1 answer
  • Whats 1 + 1 = ? ( I NEED ANSWER ASAP!)
    9·1 answer
  • I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT. PLEASE ANSWER THIS QUESTION RIGHT
    7·1 answer
  • A school club sold 300 shirts. 31% were sold to fifth graders, 52% were sold to sixth graders, and the rest were sold to teacher
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!