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
julsineya [31]
3 years ago
10

You and your friend each start a car-washing service. you spend $25 on supplies and charge $10 per car. your friend spends $55 o

n supplies and charges $13 per car. how many cars do you have to wash to earn the same amount of money as your friend?
Mathematics
1 answer:
lakkis [162]3 years ago
7 0
Let x be the number of cars. We will find out how many cars you have to wash to make as much money as your friend:
10x - 25= 13x - 55 Add 25 on both sides and subtract 13x, also both sides:
3x = -30 Now divide both sides by -3:
x= 10 cars you have to wash.

You might be interested in
How many of these pitchers can a cylinder with height 9 inches and 2r fill? Explain how you know.
irakobra [83]

Answer:

4 pitches

Step-by-step explanation:

if a cylinder with height 9 inches and radius r is filled with water, it can fill a certain pitcher. how many of these pitchers can a cylinder with height 9 inches and radius 2r fill? explain how you know.

Solution:

The volume of a cylinder is given by:

V = πr²h;

where V is the volume, r is the radius of the cylinder and h is the height of the cylinder.

A cylinder with height 9 inches and radius r can fill a certain pitcher. Therefore the volume of the cylinder is:

V = πr²h = πr²(9) = 9πr²

V = volume of pitcher = volume of cylinder with radius r = 9πr²

For a cylinder with height 9 inches and radius 2r its volume is:

V2 = πr²h = π(2r)²(9) = 36πr²

Therefore, the number of pitchers a cylinder with height 9 inches and radius 2r can fill is:

number of pitches = 36πr² / 9πr² = 4

Therefore a cylinder with height 9 inches and radius 2r can fill 4 pitches.

3 0
2 years ago
-7(5h + 9) = 17 - 8h please help i need this FAST
Katyanochek1 [597]

Answer:

h = -2 \frac{26}{27}

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

4 0
3 years ago
Read 2 more answers
The cost of 5m of cloth is ₹450. The cost of 8m of cloth is
enyata [817]

Step-by-step explanation:

Rs 720

Cost of 1 m of cloth = 450/5= Rs 90

Cost of 8 m of cloth= 90*80= Rs 720

7 0
3 years ago
Read 2 more answers
Someone please help me I’ll give out brainliest please dont answer if you don’t know
Anika [276]

Answer:

2

Step-by-step explanation:

5(2) - (2)^3 = 10 - 8 = 2

3 0
3 years ago
Which of the following phrases translates to the expression n - 8?
weqwewe [10]

Answer:

B. eight fewer than a number

3 0
3 years ago
Read 2 more answers
Other questions:
  • Ссппер<br> What is the image of (7, -2) after a reflection over the line y = -x?
    14·1 answer
  • What is the minimum number of 7 passenger vans needed to transport 19 people? 12 6 4 3
    13·2 answers
  • How many cookies are in the cookie jar?
    8·2 answers
  • -onsider x + 4 = x + 8. What values could be substituted for x to make this a true
    5·1 answer
  • What is the value of z? 52° 104° 116° 208°
    13·2 answers
  • 3x-2 (4x-9) = 4 - 27 - x
    7·1 answer
  • Find the length of the side labeled “x”.<br> a) 4.88<br> b) 10.96<br> c)5.34<br> d)26.95
    11·2 answers
  • What is the value of x
    15·2 answers
  • Evan has equal numbers of pop songs, jazz songs, and rock songs loaded on his personal music player. He has it set to play songs
    7·1 answer
  • Simplify -3(-4x + 2)
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!