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
PSYCHO15rus [73]
2 years ago
12

The circumference of a circle is 257 cm. What is the area, in square centimeters

Mathematics
2 answers:
nikdorinn [45]2 years ago
7 0

Answer:

2\pi \times r = c

\pi \times  {r}^{2}  = a

A=5257.76

Step-by-step explanation:

Or use a calculator online.

tankabanditka [31]2 years ago
6 0
5267.56 because I said so use a calculator lol
You might be interested in
Perform the indicated operation. 22 6/11 ∙ 1 1/2
IrinaK [193]

Answer:

3. 33 9/11

Step-by-step explanation:

EZ

4 0
3 years ago
There are 7 oak trees in Aidan's yard. The other 2 trees in his yard are maple trees.
Radda [10]
7/9 of his trees are oak trees

6 0
2 years ago
The speed with which utility companies can resolve problems is very important. GTC, the Georgetown Telephone Company, reports it
brilliants [131]

Answer:

(a) 11.25 and 1.68  

(b) 0.1651

(c) 0.3903

(d) 0.6865

Step-by-step explanation:

We are given that GTC, the Georgetown Telephone Company, reports it can resolve customer problems the same day they are reported in 75% of the cases and suppose the 15 cases reported today are representative of all complaints.

This situation can be represented through Binomial distribution as;

P(X=r)= \binom{n}{r}p^{r}(1-p)^{n-r} ; x = 0,1,2,3,....

where,  n = number of trials (samples) taken = 15

             r = number of success

             p = probability of success which in our question is % of cases in

                  which customer problems are resolved on the same day, i.e.;75%

So, here X ~ Binom(n=15,p=0.75)

(a) Expected number of problems to be resolved today = E(X)

            E(X) = \mu = n * p = 15 * 0.75 = 11.25

    Standard deviation = \sigma = \sqrt{n*p*(1-p)} = \sqrt{15*0.75*(1-0.75)} = 1.68

(b) Probability that 10 of the problems can be resolved today = P(X = 10)

     P(X = 10) = \binom{15}{10}0.75^{10}(1-0.75)^{15-10}

                    = 3003*0.75^{10} *0.25^{5} = 0.1651

(c) Probability that 10 or 11 of the problems can be resolved today is given by = P(X = 10) + P(X = 11)

    = \binom{15}{10}0.75^{10}(1-0.75)^{15-10}+\binom{15}{11}0.75^{11}(1-0.75)^{15-11}

    = 3003*0.75^{10} *0.25^{5} + 1365*0.75^{11} *0.25^{4} = 0.3903

(d) Probability that more than 10 of the problems can be resolved today is

    given by = P(X > 10)

P(X > 10) = P(X = 11) + P(X = 12) + P(X = 13) + P(X = 14) + P(X = 15)  

= \binom{15}{11}0.75^{11}(1-0.75)^{15-11}+\binom{15}{12}0.75^{12}(1-0.75)^{15-12} + \binom{15}{13}0.75^{13}(1-0.75)^{15-13}+\binom{15}{14}0.75^{14}(1-0.75)^{15-14} + \binom{15}{15}0.75^{15}(1-0.75)^{15-15}

= 1365*0.75^{11} *0.25^{4} + 455*0.75^{12} *0.25^{3}+105*0.75^{13} *0.25^{2} + 15*0.75^{14} *0.25^{1}+1*0.75^{15} *0.25^{0}

= 0.6865

3 0
3 years ago
Parallelogram is 180 square units. The base is 30 Units. Which equation can be used to find the height of the parallelogram?
bekas [8.4K]
C.) 30h = 180
Since you already have your base all you have to do is find the height
BxH= A
30xH = 180
7 0
3 years ago
Please answer thank you!
vivado [14]

Answer:

C

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following would least likely have a negative impact on determining eligibility for a home loan?
    15·1 answer
  • Find the area of the triangle whose vertices are given below. ​a(0​,0​) ​b(negative 5​,3​) ​c(3​,2​) the area of triangle abc is
    6·1 answer
  • Darin needs to know the price per pound of clementines. What needs to change in the table so that the data on clementines is in
    13·1 answer
  • Help me on this math shiiii
    9·2 answers
  • A rectangular piece of paper with length 34cm and width 16cm has two semicircles cut out of it. Find the area of the paper that
    7·2 answers
  • Solve for x. x3=−1000
    12·2 answers
  • The school band is selling raffle tickets for $2. If Kyle spent p dollars on tickets this week and q dollars on tickets the week
    9·2 answers
  • 1. Neftaly flipped a coin 80 times. It landed on tails 40 percent of times. How many times does it land on tails?
    8·2 answers
  • Help me please please please
    14·1 answer
  • A one to one function is given. Write an equation for the inverse function <br> M(x)=4x^3-3
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!