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
posledela
3 years ago
12

Francis teaches the piano. He charges each student an enrollment fee of $100 plus $15 per hour of piano lessons. The average cos

t of lessons for a
student per hour is $25
If h represents the number of hours a student spends in lessons, which equation can be used to find the value of h?
Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
6 0

Answer:

The first one should be right. Since the teacher is charging $15 per hour of the piano lesson then it can't be any of the answers of $100h. The answer can't be C, the third one, since you're adding the enrollment fee to the cost of every piano lesson it would be wrong to subtract the $100. Hope that helps!

Step-by-step explanation:

The answer will the answer on the top $25=$100+$15h over h

Schach [20]3 years ago
5 0

Answer: The number of hours is 10 hours.

Step-by-step explanation:

Since we have given that

Average cost of lessons = $25

let h be the number of hours a student spends in lessons.

Since each student has fee of $100 plus $15 per hour.

So, According to question, it becomes,

25=\dfrac{100+15h}{h}\\\\25h=100+15h\\\\25h-15h=100\\\\10h=100\\\\h=\dfrac{100}{10}\\\\h=10

Hence, the number of hours is 10 hours.

You might be interested in
Use the quadratic formula to find the solutions to the quadratic equation
wlad13 [49]
3*2=6
6-x-2=0
4=x
The answer is 4
7 0
3 years ago
Read 2 more answers
I really need help quick
Natali [406]

Answer:

\sf x=2+\sqrt{6},\:x=2-\sqrt{6}

Explanation:

\sf y = x^2 -4x

given that y = 2

\sf x^2 -4x = 2

\sf x^2 -4x -2 = 0

using quadratic formula:

\sf x = \dfrac{ -b \pm \sqrt{b^2 - 4ac}}{2a}  \    \ \ when  \   ax^2 + bx + c = 0

\rightarrow \sf x_{1,\:2}=\dfrac{-\left(-4\right)\pm \sqrt{\left(-4\right)^2-4\cdot \:1\cdot \left(-2\right)}}{2\cdot \:1}

\rightarrow \sf x_1=\dfrac{-\left(-4\right)+2\sqrt{6}}{2\cdot \:1},\:x_2=\dfrac{-\left(-4\right)-2\sqrt{6}}{2\cdot \:1}

\rightarrow \sf x=2+\sqrt{6},\:x=2-\sqrt{6}

in decimals:

\rightarrow \sf x=4.45 , \ -0.45

5 0
2 years ago
The expression 2l 2w is used to find the perimeter of a rectangle with length l and width w. what is the perimeter of a rectangl
AnnyKZ [126]
Just plug the values into the equation and solve

3 0
3 years ago
Read 2 more answers
What is the length of the hypotenuse? If necessary, round to the nearest tenth.
Tatiana [17]

Answer: 9.4

Explanation: 8.4^2+4.3^2=

70.56+18.49=89.06

square root of 89.06 is 9.437

9.4 rounded off

7 0
2 years ago
Read 2 more answers
I don't know it at all I need help
damaskus [11]
I hope this helps you

7 0
3 years ago
Other questions:
  • The ratio of Monarch butterflies to Queen butterflies at a butterfly farm was 9:7. If there are no additional butterflies at the
    15·1 answer
  • How do u graph slope
    12·1 answer
  • Alisa's family planted 7 trees in their yard. The
    14·1 answer
  • - On Tuesday, Elena completed 20 items of her math homework in 36 minutes. At that same rate, how long (
    14·1 answer
  • Grace is practicing free throws. The probability that she will shoot the ball into the basket is 5/9 . What is the probability t
    13·1 answer
  • Lucy spent a total of $6.60 on 5 apples and a package of grapes. If the package of grapes cost $2.35, how much did each apple co
    13·1 answer
  • What is the length of side s of the square shown below?
    9·1 answer
  • Kaz buys a car.
    7·2 answers
  • In a school with 200 students, 45% are males. how many males are there.? please help me​
    7·1 answer
  • A ratio is a multiplicative comparison of two quantities expressed with the same units. The numbers in a ratio are called terms.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!