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
mezya [45]
2 years ago
14

Two mechanics worked on a car. The first mechanic worked for 15

Mathematics
1 answer:
4vir4ik [10]2 years ago
4 0

Answer:

First: $65

Second: $115

Step-by-step explanation:

We write equations for each part of this situation.

<u>The Total Charge</u>

Together they charged 1550. This means 1550 is made up of the first mechanics rate for 15 hours and the second's rate for 5 hours. Lets call the first's rate a, so he charges 15a. The second's let's call b. He charges 5b. We add them together 15a+5b=1550.

<u>The Sum of the Rates</u>

Since the first's rate is a and the second is b, we can write a+b=180 since their sum is 180.

We solve for a and b by substituting one equation into another. Solve for the variable. Then substitute the value into the equation to find the other variable.

For a+b=180, rearrange to b=180-a and substitute into 15a+5b=1550.

15a + 5 (180-a)=1550

15a+900-5a=1550

10a+900-900=1550-900

10a=650

a=$65 was charged by the first mechanic.

We substitute to find the second mechanic's rate.

65+b=180

65-65+b=180-65

b= $115 was charged by the second mechanic

You might be interested in
Help pls!!!!!!!!!!!!!!!!!!
Sidana [21]

Answer:

I can't see the file

Step-by-step explanation:

8 0
2 years ago
3x = 8 <br> 3x + y = 15<br><br> ???
fiasKO [112]
3x=8

Solve for x by dividing by 3 on both sides

x=8/3

Now plug 8/3 in for x in second equation

3(8/3)+y=15

This gives you

8+y=15

Subtract by 8 on both sides to find y

y=8

Now write it in ordered pair form (x,y)

So your answer is (8/3,8)
6 0
2 years ago
I am doing Algebra for homework what is: bxbxbxb
Eduardwww [97]
Bxbxbx = b³x³ = (bx)³
5 0
3 years ago
I NEED HELP ASAPPPPPPPPPPPP
Bingel [31]

Answer:

c.

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which ordered pair makes both inequalities true for y&gt; -2x + 3 and y ≤ x - 2
lina2011 [118]

Answer:

(2,0)

Step-by-step explanation:

Substitution, 0> -2(2) + 3 which equals, 0> -1 True

0= 2 - 2 True

6 0
3 years ago
Other questions:
  • 8u+9v+3u+5v simplify.​
    5·1 answer
  • Whitey calved an 87-pound calf on March 8. The calf was sold 245 days later
    15·1 answer
  • Mr. Mole left his burrow that lies below the ground and started digging his way at a constant rate deeper into the ground. After
    15·1 answer
  • What is the measure of Arc RS?
    13·1 answer
  • Jeff uses the expression 2(3b + 1) to determine how many books (b) he needs to order for his store. If b = 12, how many books sh
    10·2 answers
  • Question 8 of 10 What is the median of this data set? 14, 18, 31, 34, 44, 50 A. 32.5 B. 33 C. 31.5 O O D. 31 SUBM​
    6·2 answers
  • Write 2 1/4<br> as an improper fraction.
    5·1 answer
  • Find the equation of a line perpendicular to x=6+6y that passes through the point (-8,6)
    15·1 answer
  • Choose the most convenient method to graph the line x - y = 5.
    14·2 answers
  • PLEASE I NEED HELP QUICKLY!!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!