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
Neko [114]
2 years ago
13

Two mechanics worked on a car. The first mechanic charged $105 per hour, and the second mechanic charged $85 per hour. The mecha

nics worked for a combined total of 15 hours, and together they charged a total of $1475 . How long did each mechanic work?
Mathematics
1 answer:
stich3 [128]2 years ago
5 0

Answer: x=10 and y=5

Step-by-step explanation:  Let  be the number of hours worked by the first mechanic.

Let  be the number of hours worked by the second mechanic.

They worked for a combined total of  hours. So we have the following equation.

The first mechanic charged  per hour and worked for  hours.

So, the first mechanic charged  dollars.

The second mechanic charged  per hour and worked for  hours.

So, the second mechanic charged  dollars.

Together they charged a total of . So we have the following equation.

The two equations above give us a system of linear equations.

We can solve the first equation for .

We then substitute  for  in the second equation to find .

You might be interested in
Could you please name the place value to which each number was rounded.3.695 to 4
Svetradugi [14.3K]

Answer:

The place value to which the number is rounded is unit place.

Step-by-step explanation:

Here, the number 3.695 is rounded to the number 4 and we have to name the place value to which the number is rounded.

Here, the place value to which the number is rounded is unit place.

And the name of the rounding is the rounding to the nearest whole number i.e. there will be no fractional part in the rounded number.

Another example is the number 0.917 is rounded to the nearest whole number to give 1. (Answer)

6 0
3 years ago
two terms of an arithmetic sequence are a6= 40 and a20= -16. write and explicit rule for the nth term
Lana71 [14]

Answer:

Tn = 64-4n

Step-by-step explanation:

The nth term of an AP is expressed as:

Tn = a+(n-1)d

a is the common difference

n is the number of terms

d is the common difference

Given the 6th term a6 = 40

T6 = a+(6-1)d

T6 = a+5d

40 = a+5d ... (1)

Given the 20th term a20 = -16

T20 = a+(20-1)d

T20 = a+19d

-16 = a+19d... (2)

Solving both equation simultaneously

40 = a+5d

-16 = a+19d

Subtracting both equation

40-(-16) = 5d-19d

56 = -14d

d = 56/-14

d = -4

Substituting d = -4 into equation

a+5d = 40

a+5(-4) = 40

a-20 = 40

a = 20+40

a = 60

Given a = 60, d = -4, to get the nth term of the sequence:

Tn = a+(n-1)d

Tn = 60+(n-1)(-4)

Tn = 60+(-4n+4)

Tn = 60-4n+4

Tn = 64-4n

7 0
3 years ago
Giving BRAINLIEST to the CORRECT answer.
olga nikolaevna [1]

Answer:a

Step-by-step explanation:

it became wider by decreasing two on the graph.

7 0
3 years ago
1. Adam has 2.6 gallons of red paint, 2.35 gallons of white paint, and 2 5/8 gallons of blue paint. If he wants to use up the ca
Korvikt [17]
1. B<span>lue

2. 18 units

3. 3 students

4. </span><span>36.75 lbs</span>
7 0
3 years ago
Last year, Shantell bought a car for $24,000. The current value of the car is $21,000. Find the percent decrease in the value of
Morgarella [4.7K]
<span>Last year, Shantell bought a car for 24 000 dollars. It decreases to 21 000 dollars this current year.
Let’s find for the percentage that it decreased.
=> in 24 000 the 50% is 12 000 as we all know since it’s divided by 2. So meaning, the possible answer is less than 50%.
=> now 25% of 24 000 is 6 000, and the amount that we’re looking is 3000, thus, the answer is 12.5%
=> 24 000 * 0.125 = 3000
=> 24 000 – 3000 = 21 000</span>



4 0
3 years ago
Other questions:
  • Please answer this correctly
    8·1 answer
  • Select the two binomials that are factors of this trinomial. x^2-3x-28 help please I really bad need it
    13·1 answer
  • Write the equation of a line that includes the point (1, 5) and has a slope of 3 in standard form. 3x + y = 5 –3x + y = 5 3x + y
    6·1 answer
  • The Storm roller coaster climbs to a height of 180 feet. The Snake roller coaster climbs to a height of 105 feet. How much highe
    14·2 answers
  • which of the three sets could not be the lengths of the sides of a triangle {6,10,12} {5,7,10} {4,4,9} {2,3,3}
    7·2 answers
  • the lengths of the sides of a rectangle window have the ratio 1.6 to 1. the area of the window 2560 square inches. what are the
    9·2 answers
  • A pack of cinnamon-scented pencils sells for $8.00. What is the sales tax rate if the total cost of the pencils is $8.64?
    11·2 answers
  • What percent increase between 80 and 110
    13·2 answers
  • What is an outlier? In mean median mode and range, what is the outlier? how does it affect mean median mode and range?
    5·1 answer
  • What is the solution to the system of equations graphed below?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!