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
Romashka-Z-Leto [24]
2 years ago
5

Lara employed a residential cleaning service to tidy up her home. They charged her $150 for 3

Mathematics
1 answer:
Natalka [10]2 years ago
4 0

Answer:

Step-by-step explanation:

Find the rate that was charged for Lara's time

       rate = dollars / hour

The use this rate to calculate how many hours it took to clean Roy's house, since the rates are the same.  Solve for hours.....

      rate for Lara = dollars / hour        =  $150 / 3 hour   =     $50 / hour

     rate for Roy = dollars / hour         Solve for hours

                                                            multiply both sides by hours

     (rate for Roy) (hour) = (dollars / hour) (hour)

     (rate for Roy) (hour) = (hour) (dollars / hour)       right side hours cancel

     (rate for Roy) (hour) = (dollars)     divide both sides by (rate for Roy)

     (rate for Roy) (hour) / (rate for Roy) = (dollars) / (rate for Roy)

                       now the rate for Roy on the leftside cancel

     (rate for Roy) (hour) / (rate for Roy) = (dollars) / (rate for Roy)

     (hour) = (dollars) / (rate for Roy)           Plug in $225 charged to Roy

                                                                     and the $50 / hour rate

   

       hour = $225 / ($50/hour)             ( 1 over 1 / hour )  = hour  

                = $(225/50) hour            think about  1 / (1/2)  = 2  the same with units

      hour =  4.5 hours

     

You might be interested in
What is the intial value and rate of change in this graph. please explain step by step!!!!!
WARRIOR [948]

The initial value of the graph is where x = 0. Thus, in this case, the initial value is 12.


The rate of change of the graph is essentially the slope of the graph. In this case, we can use the slope formula:

\dfrac{y_2 - y_1}{x_2 - x_1}

  • (x_1, y_1) and (x_2, y_2) are points on the graph

Let's use two points from the chart to find the slope:

m = \dfrac{30 - 21}{2 - 1} = 9


In this case, the rate of change of the graph is 9.

4 0
3 years ago
Read 2 more answers
PLS HELP<br> THE SQUARE ROOT OF -17
jek_recluse [69]

Answer:

i√17 ≈ 4.123106i

Step-by-step explanation:

The square root of a negative number is "i" times the square root of its absolute value. It is an imaginary number.

_____

i is generally the symbol used for √(-1). In some fields, such as electrical engineering, where i has a different meaning, the symbol j may be used instead.

6 0
3 years ago
Monica has $20. She needs to buy a gallon of milk that costs $2.50. She also wants to buy yogurt, which costs $1.20 a cup. What
trapecia [35]

Answer: The greatest number of cups of yogurt MOnica can buy is 14.

Step-by-step explanation:

If she  need to buy a gallon of milk then it means that $2.50  will be deducted from the money .  

Use the the inequality to solve for how many cups of yogurt Monica can buy

1.20x + 2.50 ≤ 20

             -2.50   2.50

1.20x ≤ 17.5

x≤14.5833...  

which means the greatest number of  cups of yogurt Monica can buy is 14.

8 0
2 years ago
What is the slope of line j?
Shalnov [3]

Answer:

The slope is  -1

Step-by-step explanation:

Hope it helped!

5 0
3 years ago
Read 2 more answers
On May 19, Bette Santoro borrowed $3,000 from Resse Bank at a rate of 12 1/2%. The loan is to be repaid on October 8. Assuming t
attashe74 [19]

The total interest cost to Bette is  $145.89

What is exact interest basis?

Exact interest means that the interest is computed on 365-day per year basis rather than a 360-day per year basis, which is the case with financial institutions.

The first task in this case is to determine the number of days from May 19, when the amount was borrowed till October 8, when loan repayment was effected.

There are 142 days between the two dates, hence, we can compute exact interest on the loan as shown by the below formula:

exact interest=loan principal*number of days the borrowing last/365days *interest rate

loan principal=$3000

number of days the borrowing last=142

interest rate=12.5%(1/2%=0.5%)

Exact interest=$3000*142/365*12.5%

Exact interest=$145.89

The amount would have been different if ordinary interest where the number of days in a year is deemed to be 360, was used instead

Find out more on exact interest on:brainly.com/question/10710550

#SPJ1

5 0
1 year ago
Other questions:
  • There are 6 red marbles, 8 blue marbles, and 11 green marbles in a bag. What is the probability that you will randomly draw eith
    5·2 answers
  • State the slope and y-intercept
    7·1 answer
  • Which triangles must be congruent
    14·1 answer
  • Angles of a polygon <br><br>thanks ​
    12·1 answer
  • SOMEONE PLEASE HELP ME
    7·1 answer
  • An envelope is 3. 1/3 inches long by 3. 1/2 inches wide what is that area of the envelop
    10·1 answer
  • 2x + y = -2
    8·2 answers
  • Plz help me i dont understand
    13·2 answers
  • Alex wants to fence in an area for a dog park. He has plotted three sides of the fenced area at the points E (1, 5), F (3, 5), a
    8·1 answer
  • Solve 4(x – 5) = 18<br> pl show working out
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!