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
IRISSAK [1]
3 years ago
8

Person 1 can do a certain job in 21 minutes, and person 2 can do the same job in 28 minuets. When completing the job together, w

hich expression would be used to represent the amount of work done by person 1. 21,1/21,x/21,21x
Mathematics
1 answer:
Hoochie [10]3 years ago
8 0

Answer:

1/21.

Step-by-step explanation:

To solve the problem 'How long would they take to do the job working together?'  you would work in fractions of the job done / minute:

1/21 + 1/28 = 1/x.

So for person 1 the expression is 1/21.

You might be interested in
Which expression is equivalent to 454•41/4 /1/2 4. 1/2
givi [52]

Answer:

2

Step-by-step explanation:

if you work inside parentheses first you get:

4^3/2 ÷ 4^1/2 which is 4

4^1/2 = \sqrt{4} which is 2

8 0
3 years ago
HELP ME! Look at the stem-and-leaf plot. What is the mode of the numbers?
S_A_V [24]

Given:

The stem-and-leaf plot or a date set.

To find:

The mode of data set.

Solution:

From the given stem-and-leaf plot, we get the numbers of the data set.

64, 67, 70, 70, 71, 75, 76, 78, 78, 80, 82, 82, 88, 91, 93, 94, 97, 98, 100, 100, 100

Mode of a date set is the most frequent value.

In the given data set the most frequent value is 100 with frequency 3.

Therefore, the mode of data set is 100. Hence, option A is correct.

7 0
3 years ago
Four gallons of paint are used to paint 20 chairs and 5 small tables.if each chair and table used the same amount of paint, how
Vinil7 [7]

Answer:

0.16 gallons of paint are used on each piece of furniture.

The answer lies between the whole numbers 0 and 1.

Step-by-step explanation:

we know that

Four gallons of paint are used to paint 20 chairs and 5 small tables.

if each chair and table used the same amount of paint

then

sum the total pieces of furniture

20+5=25 pieces

Find the unit rate

Divide the total gallons of paint used by the total pieces

\frac{4}{25}=0.16\ \frac{gallons}{piece}

therefore

0.16 gallons of paint are used on each piece of furniture.

The answer lies between the whole numbers 0 and 1.

7 0
3 years ago
Hello i need help dose any one know what to do
lord [1]

Answer:

Add them up so ur answer can be right

7 0
2 years ago
Give a description of the rules for the order of operation in your own words
anyanavicka [17]

Answer:

Order of opoation is a techniqe that gives us a easier way to figure out work

Step-by-step explanation:

Please mark me as brainiset

3 0
3 years ago
Other questions:
  • According to a recent study, 1 in every 9 women has been a victim of domestic abuse at some point 19) in her life. Suppose we ha
    7·1 answer
  • Use the following ordered pairs
    8·1 answer
  • Chelsea is graphing the function f(x) = 20(One-fourth)x. She begins by plotting the initial value. Which graph represents her fi
    14·2 answers
  • A soccer game is 90 minutes long. 36 minutes have passed.
    12·1 answer
  • explain how the number of text messages Dario sent and the cost form an arithmetic sequence. Then write an expression to find Da
    11·2 answers
  • Simplify negative 6 and 1 over 4 - negative 2 and 1 over 8
    8·2 answers
  • Does the number line below represent the solution to the inequality x > -2?
    9·1 answer
  • What is the answer to this paper
    5·1 answer
  • The equation of a straight line is 3x+2y=18
    7·2 answers
  • you are 6 1/2 feet below sea level. you swim towards the surface 2 2/3 feet. what is your new position the water?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!