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REY [17]
3 years ago
14

Sharon bought a circular rug

Mathematics
1 answer:
romanna [79]3 years ago
7 0

Answer:

50.24 square feet

Step-by-step explanation:

Area of a circle = πr2

= π × 4^2

= 50.26 square feet

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What’s a complex conjugate in math
goldenfox [79]

Answer:


Step-by-step explanation:

In mathematics, the complex conjugate of a complex number is the number with an equal real part and an imaginary part equal in magnitude but opposite in sign. For example, the complex conjugate of 3 + 4i is 3 − 4i. In polar form, the conjugate of is.

3 0
3 years ago
In a recent survey, 60% of the community favored building a health center in their neighborhood. If 14 citizens are chosen, find
andreev551 [17]

Answer:

Probability that exactly 5 of them favor the building of the health center is 0.0408.

Step-by-step explanation:

We are given that in a recent survey, 60% of the community favored building a health center in their neighborhood.

Also, 14 citizens are chosen.

The above situation can be represented through Binomial distribution;

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

where, n = number of trials (samples) taken = 14 citizens

         r = number of success = exactly 5

        p = probability of success which in our question is % of the community

              favored building a health center in their neighborhood, i.e; 60%

<em>LET X = Number of citizens who favored building of the health center.</em>

So, it means X ~ Binom(n=14, p=0.60)

Now, Probability that exactly 5 of them favor the building of the health center is given by = P(X = 5)

        P(X = 5) = \binom{14}{5} \times 0.60^{5} \times (1-0.60)^{14-5}

                      = 2002 \times 0.60^{5} \times 0.40^{9}

                      = 0.0408

Therefore, Probability that exactly 5 of them favor the building of the health center is 0.0408.

4 0
3 years ago
4+(-7) what is the solution
MrMuchimi

Answer:

-3

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
1. A bicycle that normally sells for $150 is on sale of 35% off. What is the sale price of the bicycle?
Ivan

Answer:

The sale price would be $102.50

Step-by-step explanation:

To find this amount, start by multiplying the price by the sale percentage,

$150 * 35% = $47.50

Now subtract that amount from the original.

$150 - $47.50 = $102.50

4 0
3 years ago
The mass of a solid cube with side length of 2 cm is 12 g. Which is the closest to the density of the cube? Show your work. A)0.
yan [13]
D = m/v
V = 2•2•2 = 8cm^3
D = 12/8 = 1.5g/cm^3

Answer is B
3 0
3 years ago
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