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
Savatey [412]
3 years ago
14

When you got your car fixed, the cost for parts was $75. The cost for labor was $45 per hour. If the total cost was $255 . Find

the number of hours
Mathematics
1 answer:
navik [9.2K]3 years ago
6 0

Answer:

3.3

Step-by-step explanation:

Hour : H

subtract the 75 from both sidesso the variable would be on one side and the knowns would be on the other side

45H + 75 = 225

        -75      -75

Divide by 45 from both sides

45H = 150

÷45     ÷45

3.33

You might be interested in
5 less than a number is equivalent to 1 more than three times the number<br><br> The number is ??
givi [52]

Answer:

-3

Step-by-step explanation:

Let x equal the mystery number

Our equation will be:

x - 5 = 1 + 3x

Subtract x from both sides

-5 = 1 + 2x

Subtract 1 from both sides

-6  = 2x

Divide both sides by 2

-3 = x

4 0
3 years ago
How do you calculate the mean of a number?
valentinak56 [21]

Answer:

The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.

5 0
3 years ago
Read 2 more answers
Write the solution in interval notation {x| 3 less than or equal to x}
klemol [59]

Answer:

Set in Interval Notation is:  [ 3, ∞)

Step-by-step explanation:

Here, the given expression is:

R  =  {x| 3 less than or equal to x}

Here, the given set is given in the ROSTER FORM of set.

Now, converting the statement in mathematical form, we get:

R  = { x : 3 ≤ x}

So, here: R is the SET OF AL ELEMENTS SUCH THAT each element is either EQUAL TO 3, or GREATER THAN 3.

Writing the st in SET BUILDER FORM, we get:

R = { 3, 4, 5, 6, ....... }

So, R in Interval Notation is:  [ 3, ∞)

4 0
3 years ago
Read 2 more answers
Only answer if you know the correct answer! Thanks! :)
Komok [63]

Answer:

1. A

2. C

3. D

4. B

6 0
3 years ago
Read 2 more answers
Miguel glues a ribbon border around the edges of a 5 - inch by 8 - inch picture to create a frame. What is the total length of r
Marat540 [252]
26 inches. Technically, since this is a perimeter problem, you need to add each length to itself and then the others. If this is confusing, you essentially need to do 5+5+8+8=26 because you have two of the fives and two eights. Perimeter is much easier than area, I promise you that
3 0
3 years ago
Other questions:
  • what value in place of the question mark makes the polynomial below a perfect square trinomial 9x^2+?x+49
    14·2 answers
  • What is the unit rate of 3.5 miles in 1.25 hours
    7·1 answer
  • Four points lie in a plane so that no three of them lie on a line. If lines are drawn connecting all pairs of these points, how
    10·1 answer
  • Need help with this please
    6·1 answer
  • What is the slope of the line that passes through the points (7,-9) and (15, -29)?
    15·2 answers
  • PLEASE HELP A store is having a sale on chocolate chips and walnuts. For 5 pounds of chocolate chips and 3 pounds of walnuts, th
    6·1 answer
  • Write an equation for the relationship shown in the table. E 0 2 3 -0.3 3.7 5.7​
    13·1 answer
  • I need help plz ASAP
    5·2 answers
  • Given △ACP ≅ △LNX, find each missing measure.
    11·1 answer
  • Test the function x-y²=0 for symmetries.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!