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
levacccp [35]
3 years ago
7

, write equivalent ratios that represent the situation and solve. 12. Angela pays $120 for 4 piano lessons. How much does she pa

y for 8 piano lessons?
Mathematics
1 answer:
nata0808 [166]3 years ago
8 0

Answer:

She pays $240 for 8 lessons.

Step-by-step explanation:

We need to set up equivalent ratios so we can cross-multiply and solve for x, the amount Angela pays for 8 lessons. Make sure to have both the costs in the numerator, and the number of lessons in the denominator. If you mix it up, this won't work.

\frac{120}{4} = \frac{x}{8}

Cross-multiply:

120*8 = 4x

Solve for x:

960 = 4x

960/4 = x

<u>x = $240</u>

You might be interested in
He paid $5.83 to make each shirt and sold each shirt at a marked-up price.
Naddika [18.5K]

we know he made a profit of 1834 for 200 shirts, let's divide those to see how much profit per shirt

\cfrac{1834}{200}\implies \cfrac{917}{100}\implies 9.17

so he made a profit of 9.17 per shirt, now profit is surplus value, value beyond the cost, we know its cost was 5.83 per shirt, so if we take 5.83 to be 100%, how much is 9.17 off of it in percentage?

\begin{array}{ccll} amount&\%\\ \cline{1-2} 5.83&100\\ 9.17&x \end{array}\implies \cfrac{5.83}{9.17}=\cfrac{100}{x}\implies 5.83x=917 \\\\\\ x=\cfrac{917}{5.83}\implies x \approx 157.29

7 0
2 years ago
The pearson correlation coefficient measures the strength of the linear association between two variables, x and y, regardless o
Vlada [557]
That is correct do I get the points?
7 0
3 years ago
Forms of money in the United States consist of paper money, coins, and _____. bartering minting checking account balances
LiRa [457]
The answer is checking account balances
4 0
2 years ago
Read 2 more answers
Two mechanics worked on a car. The first mechanic charged $95  per hour, and the second mechanic charged $60  per hour. The mech
Yanka [14]

Answer:

<em>Mechanic A worked for 5 hours</em> and <em>Mechanic B worked for 15 hours</em>

I hope my answer and explanation helped!

<u>okay to get started you need to make a system of equations:</u>

x= number of hours worked by mechanic A

y= number of hours worked by mechanic B

x + y= 20

95x + 60y= 1375

<u>substitute in an equation:</u>

x + y= 20

y= 20- x

95x + 60(20-x)=1375

<u>Solve for x</u>

95x + 1200 - 60x=1375

35x =175

x= 5

<u>plug in x to solve for y</u>

x + y= 20

5 + y= 20

y=15

<u>Check work</u>

then you're done :D

3 0
3 years ago
What is the recursive rule for the sequence? −22.7, −18.4, −14.1, −9.8, −5.5, ... an=an+1+4.3 , where a1=−22.7 an=an−1+4.3 , whe
egoroff_w [7]
This is an arithmetic sequence with common difference 4.3

The rule is  an = an-1 + 4.3 where a1 = -22.7
8 0
3 years ago
Read 2 more answers
Other questions:
  • Find the total area for the cylinder with the given measurement.
    12·2 answers
  • The population of city is 2500 if the number of males is 240 more than females how many males and females are there in the city?
    6·1 answer
  • A small art museum charges $5 for an adult ticket and $3 for a student
    15·1 answer
  • Compound interest earns interest on both the principal and the interest already earned.
    11·1 answer
  • Which selection best indicates the slices that can be made from the right rectangular pyramid?
    5·1 answer
  • The figure below is divided into 100 squares of equal size.
    7·1 answer
  • Measures of variability,i have learned that​
    14·1 answer
  • Find f(0) and then find the equation of the given linear function.
    9·1 answer
  • Write the wod sentence as an equations. you don't need to solve it.
    5·2 answers
  • HELP PLEASE 20 POINTS
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!