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
astra-53 [7]
3 years ago
9

the form ula for the area of a circle can be found by using a parallelogram. explain the way to derive the formula​

Mathematics
2 answers:
USPshnik [31]3 years ago
7 0

Answer:

Sample response: The circle can be cut into slices, separated, and fit together to form a parallelogram that has the same area. The height of the parallelogram is the radius and the base is half the circumference, which is

vladimir2022 [97]3 years ago
4 0

Answer:

Explanation: As you make the segments smaller and smaller, the parallelogram becomes more of a rectangle with shorter side equal to the radius of the circle r and longer side πr - half of the circumference of the circle. Hence we get the formula πr2 for the area of a circle of radius r .

Step-by-step explanation:

You might be interested in
For which of the following values of x does f(x) = -16?<br> -16<br> 12<br> 0<br> 8
iVinArrow [24]

Answer:

I’m sorry i’m just trying to get more answers:( i hope u find yours though! xoxo

Step-by-step explanation:

3 0
3 years ago
In a recent stock market downturn, the value of a $500 stock is decreasing at 1.2% per month. This situation can be modeled by t
Hunter-Best [27]
Question 1: What is the annual percentage rate of decrease? 
Answer 1: 13.5%

Question 2: What is the stock worth after 1 year?
Answer 2: 433 dollars

------------------------------------------------------

Explanation:

I'm assuming the given function is supposed to read A(t) = 500(0.988)^(12t)

If t = 0, then,
A(t) = 500(0.988)^(12t)
A(0) = 500(0.988)^(12*0)
A(0) = 500

If t = 1, then,
A(t) = 500(0.988)^(12t)
A(1) = 500(0.988)^(12*1)
A(1) = 432.566954987969
A(1) = 432.57 <<---- rounding to the nearest penny

Now compute the percent change:
100*(A(1)-A(0))/(A(0)) = 100*(432.57-500)/500 = -13.486
Note: the negative percent change means percent decrease. If the stock were increasing in value, then the percent change would be positive.

The annual percent decrease is roughly 13.486% which further rounds to 13.5%
That takes care of the first part. 

To answer the second part, simply round the result for A(1) to the nearest whole number. 
So round 432.57 to 433 and that's the answer to the second part. 

6 0
3 years ago
Brown's Grounds Coffee is selling for $2.50 a pound is mixed with Coffee From Heaven selling for $2.80 a pound to produce 100 po
LenaWriter [7]

Answer: the number of pounds of Brown's Grounds Coffee that was mixed is 60

the number of pounds of Coffee From Heaven that was mixed is 40

Step-by-step explanation:

Let x represent the number of pounds of Brown's Grounds Coffee that was mixed.

Let y represent the number of pounds of Coffee From Heaven that was mixed.

Brown's Grounds Coffee is selling for $2.50 a pound is mixed with Coffee From Heaven selling for $2.80. 100 pounds was produced and sold at the rate of $2.62 per pound. This means that the total cost of the blend produced is 100×2.62 = $262. Therefore

2.5x + 2.8y = 262 - - - - - -- - -- - -1

x + y = 100

Substituting x = 100 - y into equation 1, it becomes

2.5(100 - y) + 2.8y = 262

250 - 2.5y + 2.8y = 262

- 2.5y + 2.8y = 262 - 250

0.3y = 12

y = 12/0.3 = 40

x = 100 - y = 100 - 40

x = 60

5 0
3 years ago
What is the area of the triangle below
Crazy boy [7]

Answer:

9 or 8

Step-by-step explanation:

The answer is 9or 8 because I counted all the boxes.

7 0
3 years ago
What is the domain and range of g(x)= -|x+2| -1
solmaris [256]

g(x)= -|x+2| -1


The domain is the input values, or x values

it is all real number


The range is the output values, or g(x)

the absolute value at is smallest is 0

0-1 is -1  this is the max since the absolute value is multiplied by -1

g(x) <=-1

the output is less than or equal to -1

4 0
3 years ago
Other questions:
  • What is the inverse of f(x) =1/3 x + 2?
    15·1 answer
  • Ann buys a pencil for 45 cents. Draw and label coins Ann could use to make 45 cents.
    13·1 answer
  • If y=15 when x=2, find y when x=8
    9·1 answer
  • Rounded to the nearest whole number, what is the approximate volume of the cage? Use π = 3.14.
    13·1 answer
  • Branniest to whoever is right plz help
    12·1 answer
  • (Easy Question) There are 3 apples and 4 bananas, what is the ratio of bananas to apples? Marking Brainliest for the first corre
    11·1 answer
  • 3.2n as a algebraic expression
    7·1 answer
  • Multiply<br> 7x(x^- x+2)
    11·1 answer
  • On a road trip, Jessica drove twice as many miles as Amy did. Together, they drove 312 miles. How many miles did Amy drive? Cant
    5·2 answers
  • Peter and Henry went to the movies Peter bought the two Movie tickets for 7 dollars each. How much did he spend for the movie ti
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!