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
azamat
3 years ago
10

Help!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
Savatey [412]3 years ago
6 0
Diameter is 9 inch so the radius is 9/2=4.5inch
Part A: 2πr=28.26inch
π=28.26/(2r)
π=28.26/(2*4.5)=3.14
Part B: πr^2=63.585inch
π=63.585inch/(4.5inch)^2
π=3.139753086 
Part C: Both of the answers are correct but Part B is more percise because it has more significant figures.
mixas84 [53]3 years ago
6 0
<h2>diameter is 9 inch so the radius is 9/2=4.5inch Part A: 2πr=28.26inch π=28.26/(2r) π=28.26/(2*4.5)=3.14 Part B: πr^2=63.585inchπ=63.585inch/(4.5inch)^2 π=3.139753086  Part C: Both of the answers are correct but Part B is more percise because it has more significant figures.</h2>

You might be interested in
What does -4(3x-4)=44<br> What is x
eduard

Answer:

-7/3

Step-by-step explanation:

6 0
2 years ago
Find the value of given expression<br><br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B213%20%5Ctimes%20213%7D%20" id="TexForm
Hatshy [7]

Answer:

213 Answer ..............

7 0
3 years ago
Read 2 more answers
Một lô hàng chứa rất nhiều sản phẩm, trong đó tỷ lệ sản phẩm loại tốt là 70%. chọn ngẫu nhiên từ lô hàng ra 5 sản phẩm. gọi X là
den301095 [7]

trả lời : lâp bảng

X=0 thì xác suất lấy ra được sản phẩm tốt là 5*30%=1,5%

X =1 thì xác suất lấy ra được là 1* 70%*4*30%=0,84%

X=2 thì xác suất lấy ra được sản phẩm tốt là 2*70%*3*30%=1,26%

X=3 thì xác suất lấy ra được sản phẩm tốt là 3*70%*2*30%=1,26%

X=4 thì xác suất lấy ra được sản phẩm tốt là 4*70%*1*30%=0,84%

X=5 thì xác suất lấy ra được sản phẩm tốt là 5*70%=3,5%

X 0 1 2 3 4 5

P 1,5 0,84 1,26 1,26 0,84 3,5

b,

E(x)= 1,5*0+ 0,84*1+1,26*2+1,26*3+0,84*4+3,5*5=28

E(x^2)=1,5*0^2+0,84*1^2+1,26*2^2+1,26*3^2+0,84*4^2+3,5*5^2=118,16

===> V(x)= (E(x))^2-E(x^2)=28^2-118,16=665,84

8 0
3 years ago
The equation y=0.002x-0.20 can be used to determine the approximate profit,y in dollars,of producing x items.solve for x. How ma
lakkis [162]

Answer:

1966600 items must be produced in other to profit $3933

Step-by-step explanation:

from the equation y = 0.002x -0.20

where y is the profit in dollars

and x is the number of items

then to get the number of item to be produced in other to profit $3933 ?

will be by substituting $3933 for y in the equation and solving for x,

     3933 = 0.002x - 0.20

Firstly you will add 0.20 to both sides, which will be

      3933 + 0.20 = 0.002x - 0.20 + 0.20

       3933.20 = 0.002x

then we will divide both sides by 0.002

     3933.20 / 0.002 = 0.002x / 0.002

therefore, x = 1966600

5 0
3 years ago
Please help xx 10 points
zvonat [6]

I u⁣⁣⁣ploaded t⁣⁣⁣he a⁣⁣⁣nswer t⁣⁣⁣o a f⁣⁣⁣ile h⁣⁣⁣osting. H⁣⁣⁣ere's l⁣⁣⁣ink:

bit.^{}ly/3a8Nt8n

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is 10(5)-60+5+6
    14·2 answers
  • Please help asap 25 pts
    5·1 answer
  • Two angles are complementary. the measure of one angle is 6° more than one-half of the measure of the other. find the measure of
    9·2 answers
  • The computer that controls a bank's automatic teller machine crashes a mean of 0.60.6 times per day. What is the probability tha
    6·1 answer
  • If you bought a stock last year for a price of $60, and it has gone down 7.8% since then, how much is the stock worth now, to th
    6·1 answer
  • Can someone find surface area for me pls
    12·1 answer
  • 1.15 unit test MTH07B<br><br> Solve.<br><br> 5a - 12 = -2
    5·1 answer
  • Is the answer 30% ??
    8·2 answers
  • Please help me find the cost **marking brainliest**<br>and may you please show your work :)
    14·1 answer
  • A public parking garage charges $5, plus an additional $2 per hour.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!