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2 years ago

15

Suppose that commercial airplane crashes in a certain country occur at the rate of 2.5 per year. what is the probability that fo

ur or more crashes will occur next year?

1 answer:

lesya [120]2 years ago

4 0

The poisson distribution applies here.
$\lambda=2.5$
$P(X=4)=\frac{e^{-2.5}\times2.5^{4}}{4!}=0.134$

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Answer:

The value of r= $\frac{-106}{47}$

The value of x= $\frac{83}{32}$

Step-by-step explanation:

Given that,

A) $\frac{2r-2}{7r+10} = \frac{9}{8}$

Now,

$\frac{2r-2}{7r+10} = \frac{9}{8}$

8(2r-2)=9(7r+10)

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-16-90=63r-16r

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r= $\frac{-106}{47}$

B) $\frac{x+4}{9} = \frac{3(x-2)-1}{5}$

Now,

$\frac{x+4}{9} = \frac{3(x-2)-1}{5}$

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5x+25=9[3x-7]

5x+25=27x-63

25+63=27x+5x

83=32x

x= $\frac{83}{32}$

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3 years ago

Which of the following is the graph of y = negative (x minus 2) cubed minus 5?

inysia [295]

Step-by-step explanation:

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-(x^3-6x^2+12x-8)=

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-x^3+6x^2-12x+8 -5=

y=-x^3+6x^2-12x+3

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1 year ago

**Round to the nearest tenth Level ll: John missed 14 points on an 80 point science test. What percentage did he get?

Dennis_Churaev [7]

Answer:

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3 years ago

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Black_prince [1.1K]

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2 years ago

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ser-zykov [4K]

Answer:

11. 3^2 • 3^5 < 3^8

12. 3^3 • 3^3 > 3^5

13. Option C.

Step-by-step explanation:

11. Which of the following expressions is true?

A. 4^3• 4^4 = 412

4^3• 4^4 = 4^7 = 16384 ❌

B. 5^2 • 5^3 > 5^5

5^2 • 5^3 = 5^5 ❌

C. 3^2 • 3^5 < 3^8

3^2 • 35 = 315 ✔️

D. 5^2 • 54 = 58

5^2 • 54 = 1350 ❌

12. Which of the following expressions is true?

A. 8^3 • 8^2 < 8^4

8^3 • 8^2 = 8^5 ❌

B. 4^4 • 4^4 = 4^16

4^4 • 4^4 = 4^8 ❌

C. 2^2 • 2^6 < 2^8

2^2 • 2^6 = 2^8 ❌

D. 3^3 • 3^3 > 3^5

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13. Write the value of the expression: 3^4/3^4

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The correct answer is C. 1 ✔️

4 0

2 years ago