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
lutik1710 [3]
3 years ago
13

It takes Luke 2 h longer than it does Anna to clean a bathroom. If t represents the amount of time (in h) it takes for Luke to c

lean a bathroom, write an expression that represents the time (in h) it takes Anna to clean the bathroom.​
Mathematics
1 answer:
a_sh-v [17]3 years ago
7 0
If it takes one person 4 hours to paint a room and another person 12 hours to
paint the same room, working together they could paint the room even quicker, it
turns out they would paint the room in 3 hours together. This can be reasoned by
the following logic, if the first person paints the room in 4 hours, she paints 14 of
the room each hour. If the second person takes 12 hours to paint the room, he
paints 1 of the room each hour. So together, each hour they paint 1 + 1 of the 12 4 12
room. Using a common denominator of 12 gives: 3 + 1 = 4 = 1. This means 12 12 12 3
each hour, working together they complete 13 of the room. If 13 is completed each hour, it follows that it will take 3 hours to complete the entire room.
This pattern is used to solve teamwork problems. If the first person does a job in A, a second person does a job in B, and together they can do a job in T (total). We can use the team work equation.
Teamwork Equation: A1 + B1 = T1
Often these problems will involve fractions. Rather than thinking of the first frac-
tion as A1 , it may be better to think of it as the reciprocal of A’s time.
World View Note: When the Egyptians, who were the first to work with frac- tions, wrote fractions, they were all unit fractions (numerator of one). They only used these type of fractions for about 2000 years! Some believe that this cumber- some style of using fractions was used for so long out of tradition, others believe the Egyptians had a way of thinking about and working with fractions that has been completely lost in history.
You might be interested in
Quadrilateral ABCD​ is inscribed in this circle. What is the measure of angle C?
Shkiper50 [21]

Answer:

107 degrees

Step-by-step explanation:

For an inscribed quadrilateral, the opposite angles are supplementary. Thus, B+D = 180 and you can solve for x.

3x+9+2x-4 = 180

5x = 175

x = 35

Next, plug the x value into angle A.

2(35) + 3 = 73

Angle C is the supplement of this which is 180-73 = 107

6 0
3 years ago
Xavier wants to distribute his baseball card collection evenly among his 8 younger brothers. What equation can be used to find c
defon
This would be D:).... C = the number of cards his brothers each get. 

4 0
3 years ago
This is the second one that i have no clue how to do lol so pls helppp
LekaFEV [45]

Answer:

1.25

Step-by-step explanation:

5 0
2 years ago
An electrician charges $25 to make a house call, plus $40 for every hour of work. Which equation shows how to find C, the total
vlada-n [284]

Answer:

C=40h+25

Step-by-step explanation:

4 0
2 years ago
What is the answer of 3x-3=12
Radda [10]

Answer:

x=5

Step-by-step explanation:

Pull out like factors :

  3x - 15  =   3 • (x - 5)

Equation at the end of step  1  :

Step  2  :

Equations which are never true :

2.1      Solve :    3   =  0

This equation has no solution.

A a non-zero constant never equals zero.

Solving a Single Variable Equation :

2.2      Solve  :    x-5 = 0

Add  5  to both sides of the equation :

                     x = 5

One solution was found :

                  x = 5

5 0
2 years ago
Read 2 more answers
Other questions:
  • What is the inequality of the problem and the symbol
    13·2 answers
  • Estimate the product by rounding 2 x 6,254
    5·1 answer
  • A survey of 2645 consumers by DDB Needham Worldwide of Chicago for public relations agency Porter/Novelli showed that how a comp
    10·1 answer
  • lucas and mateus have been collecting coins they find on the ground. lucas has $3.23 and mateus has $2.87. how much less money d
    8·1 answer
  • Do 4x and 15 + x have the same value when x is 5
    11·2 answers
  • Which line has an equation of Y = -5x+4 in slope-intercept form?
    5·1 answer
  • The Volume () of gas vanes inversely to the pressure (P). The volume of gas is 200 cm ^ 3 under pressure of 32 kg/cm^ 2 What wil
    7·1 answer
  • Gas is priced at $2.70 per gallon. My gas tank has 2 gallons currently in the tank. Write an equation to show much
    9·1 answer
  • PLEASE ANSWER WILL MARK BRAINLIEST!!
    12·1 answer
  • Figure this out for me.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!