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
Which angles are adjacent angles?
Pepsi [2]
C, B, G  common vortex ( B) and common side (C, G) 


8 0
3 years ago
Please help (if you can’t it’s okay) :>
IrinaVladis [17]

Answer:

the answer is 11%

Step-by-step explanation:

this is because

27/30x100=90

which is 90

but the difference between 100 and 90 is 10

so its 10% but its closer to 11%

so yeah

i am not sure if its correct

3 0
3 years ago
Read 2 more answers
Help please ?????????
Irina18 [472]
X = -3, y = 2 rise over run
3 0
3 years ago
I’ll award you brainliest if you answer This question
guajiro [1.7K]

Answer:

$2353 at 12.5% and $7647 at 8.25%

Step-by-step explanation:

I'll say a is the amount he invested in one market, and b is the amount in the other.

a + b = 10000, or b = 10000 - a

multiplying the investments with the percentages and adding them together will give the total earned interest.

(a × 0.125) + (b × 0.0825) = 925

0.125a + 0.0825b = 925

Use substitution to solve for a.

0.125a + 0.0825(10000 - a) = 925

0.125 a + 825 - 0.0825a = 925

0.0425a = 100

a = 2352.94

Use substitution to find b

b = 10000 - 2352.94

b = 7647.06

The questions are to the nearest dollar so round a and b.

$2353 and $7647

6 0
3 years ago
Peter works as a delivery person for a bike shipping company. The graph shows a linear model for his delivery times on different
aev [14]

Answer/Step-by-step explanation:

✍️The equation of the line in point-slope form:

The equation is given as y - b = m(x - a), where,

(a, b) = a point on the line.

slope (m) = \frac{y_2 - y_1}{x_2 - x_1}

Let's find the slope (m) of the line, housing (3, 21) and (6, 12):

slope (m) = \frac{y_2 - y_1}{x_2 - x_1} = \frac{12 - 21}{6 - 3} = \frac{-9}{3} = -3

Substitute a = 3 and b = 21, m = -3 into y - b = m(x - a).

Thus, the point-slope equation would be:

✅y - 21 = -3(x - 3)

✍️The equation of the line in slope-intercept form:

Rewrite y - 21 = -3(x - 3), so that y is made the subject of the formula.

y - 21 = -3x + 9

Add 21 to both sides

y = -3x + 9 + 21

y = -3x + 30

✅The slope-intercept equation of the line is y = -3x + 30

Where,

-3 = how much did his delivery time decrease per day (slope)

30 = how long it initially took Peter to deliver his packages (y-intercept)

5 0
3 years ago
Other questions:
  • I need help with #3 and it is URGENT so PLEASE work hastily .
    6·1 answer
  • Slove the system of equations:y+4×=8and 5×+2y=13?
    11·1 answer
  • Can you please help me in this question.I need the ASAP
    14·1 answer
  • A type of reasoning that uses previously proven or accepted properties to reach conclusion is...
    7·1 answer
  • The width of a rectangle is 3 units less than the length. The area of the rectangle is 28 units. What is the width, in units, of
    13·1 answer
  • Why -2 is a natural number not a whole number
    5·1 answer
  • $220 for the 12ft of rope.How much is gor 1 feet?Find the unit rate.Round to the nearest hundredth if necessary
    9·1 answer
  • What is the y-intercept of y<br> = 3 - 4z?
    12·1 answer
  • What’s the work and answer for this? Someone please tell me
    12·1 answer
  • I need some help on this
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!