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Gekata [30.6K]
2 years ago
12

I need help pls someone

Mathematics
1 answer:
Dmitry [639]2 years ago
5 0

Answer:

gupflysldlhxlhdhldlyslugupflyoysoyddsldlhxlhdhldlyslus

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Geometry Question Find the area of the circle
oee [108]

Answer:

Area of the circle = 706.5 cm²

Step-by-step explanation:

Diameter = 30cm

Radius = 15cm

Area of the circle=πr²= 3.14(15)²= 3.14×225 = 706.5 cm²

5 0
3 years ago
Read 2 more answers
M is the midpoint of LN. L has coordinates (-3,-1) and M has coordinates (0,1). Find N coordinates.
miskamm [114]
To get the coordinates, we would use the midpoint formula (google it)

(X1-X2/2 , Y1+Y2/2)

(-3+0/2 , -1+1/2)

N: (-3/2,0)
8 0
3 years ago
Approximately 5% of calculators coming out of the production lines have a defect. Fifty calculators are randomly selected from t
baherus [9]

Answer:

0.2611 = 26.11% probability that exactly 2 calculators are defective.

Step-by-step explanation:

For each calculator, there are only two possible outcomes. Either it is defective, or it is not. The probability of a calculator being defective is independent of any other calculator, which means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

5% of calculators coming out of the production lines have a defect.

This means that p = 0.05

Fifty calculators are randomly selected from the production line and tested for defects.

This means that n = 50

What is the probability that exactly 2 calculators are defective?

This is P(X = 2). So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 2) = C_{50,2}.(0.05)^{2}.(0.95)^{48} = 0.2611

0.2611 = 26.11% probability that exactly 2 calculators are defective.

3 0
3 years ago
. A fence encloses a triangular field. There is
poizon [28]

Answer:

  • 16 posts

Step-by-step explanation:

<u>Sides are:</u>

  • 20 ft, 25 ft and 35 ft

<u>There are following number of posts on each of the sides:</u>

  • 20 ft side ⇒ 20/5 = 4
  • 25 ft side ⇒ 25/5 = 5
  • 35 ft side ⇒ 35/5 = 7

<u>Total number:</u>

  • 4 + 5 + 7 = 16 posts
6 0
3 years ago
How to calculate the rise and run of a slope (4,-1) and (-2,3)
astra-53 [7]
m =  \frac{ y_{2} - y_{1} }{ x_{2} - x_{1} }
m =   \frac{3 - (-1)}{-2 - 4}
m =  \frac{4}{2}
m = 2
8 0
3 years ago
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