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
Molodets [167]
3 years ago
6

The equation πr²Gives the area,A of a circle with a radius,r,. Solve the function for π

Mathematics
1 answer:
zalisa [80]3 years ago
7 0

\bf \textit{area of a circle}\\\\ A=\pi r^2\qquad \qquad \implies \qquad \cfrac{A}{r^2}=\pi

You might be interested in
How do i rearrange the formula <br><br> w = x^2 - 2yz<br><br> to make y the subject?
iogann1982 [59]
Solve for y by simplifying both sides of the equation, then isolating the variable.
y = x^2/2^z - w/2z
7 0
3 years ago
Change 20% into a fraction
OlgaM077 [116]
I think it’s just 20/100
5 0
3 years ago
Read 2 more answers
Suppose you need to get the dent in your car fixed. You see the ads in the newspaper above (mikes repair shop $100 service charg
Norma-Jean [14]

Answer:

<em>Total Cost at Amy's shop is $280 which is less than the total cost at Mike's shop which is $295, so I will take the car to Amy's shop</em>

<em>Point of intersection: (x,y) = (4,360)</em>

Explanation:

Part 1 )

Let x = number of hours worked

Let y = total cost to you

Determining where to take the car:

<em>Total Cost at Amy's shop is $280 which is less than the total cost at Mike's shop which is $295</em>

Mike's repair shop:

Service fee: $100

Per hour rate: $65

Let x is the number of hours worked on. Total cost will be equal to the service fee plus hourly charges. Charges per an hour are $65, so for x hours the charges will be 65x.

Therefore, total cost for Amy's repair shop can be written as:

y = 100 + 65x ------(1)

For 3 hours work: y = 100 + 65(3)

<em>Cost at Mike's, y = $100 + $195 = $295</em>


<em>Amy's repair shop: </em>

Service fee: $40

Per hour rate: $80

Charges per an hour are $40, so for x hours the charges will be 80x.

Therefore, total cost for Amy's repair shop can be written as:

y = 40 + 80x ------(2)

For 3 hours work: x = 3

y = 40 + 80(3)

<em>Cost at Amy's, y  = $40 + $240 = $280</em>


<em>Part 2)</em>

<em>Find the point of intersection</em>

<em>Using elimination method:</em>

<em>y = 100 + 65 x    ------1</em>

<em>y = 40 + 80x      ------2</em>

<em>As the y coefficients are equal we will subtract eq1 from eq2</em>

<em>y - y = 40 + 80x - 100 - 65x</em>

<em>0 = -60 + 15x</em>

60 = 15x

x = \frac{60}{4}

x = 4

put x = 4 in eq 1

we get y = 100 + 65 (4) = 100 + 260 = 360

x = 4, y = 360

Point of intersection: (x,y) = (4,360)



8 0
3 years ago
What is the simplified expression for the expression below?
shepuryov [24]

Answer:

4x - 43

Step-by-step explanation:

7(x-4) = 7x - 28

-3(x + 5) = -3x - 15

7x - 28 - 3x - 15 = 4x - 43

7 0
3 years ago
Read 2 more answers
You lose track of how many 2-point baskets and 3-point baskets a team makes in a basketball game. The team misses all the 1-poin
babunello [35]

Answer:

  • x-intercept: 27, the number of 2-pointers if no 3-pointers
  • y-intercept: 18, the number of 3-pointers if no 2-pointers

Step-by-step explanation:

Each intercept is found by setting the other variable to zero and solving for the variable value of interest.

  2x +3y = 54

<u>x-intercept:</u>

  2x = 54

  x = 27

<u>y-intercept:</u>

  3y = 54

  y = 18

__

By definition, the intercept values are the values that satisfy the equation when the other variable is zero.

x-intercept: To score 54 points, the team would have to make 27 2-point baskets if no 3-point baskets were made.

y-intercept: To score 54 points, the team would have to make 18 3-point baskets if no 2-point baskets were made.

8 0
2 years ago
Other questions:
  • PLS PLS HELP :)) which series of transformations takes the graph of f(x)=2x+3 to the graph of g(x)=-2x+4?
    14·1 answer
  • Find the product of X^2+x-12/x^2-5x-6 with complete solution
    11·1 answer
  • Represents the sets with a Venn diagram: U = {1,2,3,4,5,6,7,8,9,10, 11, 12} A = {1,2,3,4,6, 12} B = {1,2,4,8}
    13·1 answer
  • A rectangular garden must have a perimeter of 150 feet and an area of at least 1200 square feet. Describe the possible lengths o
    14·1 answer
  • The equation is ax+r=7 <br><br>how do I solve for r??
    10·2 answers
  • Ken has a rectangular shaped vegetable garden that is 15 feet by 9 feet. He would like to increase the length and width by the s
    6·1 answer
  • (2)/(3) =( 4)/( 3+x) help give brainliest if correct and explanation please
    5·2 answers
  • Since an instant replay system for tennis was introduced at a major tournament, men challenged 1425 referee calls with the resul
    8·1 answer
  • How do I do this? Please help!
    9·1 answer
  • Rewrite \sqrt((1+cos45)/(2)) using a half-angle identity
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!