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iren [92.7K]
3 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?
Mathematics
1 answer:
lesya [120]3 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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suppose line a is parallel to line b and line b is perpendicular to line c. what relationship between line a and line c
kykrilka [37]

Answer:

a and c would also be perpendicular

Step-by-step explanation:

because a║b and b⊥c you would use the transitive property of equality.

6 0
3 years ago
Mr peterson will buy 80 feet of fencing. The pieces of fence come in whole numbers of feet. His enclosure will be a rectangle an
DIA [1.3K]
The perimeter is:
 P = 2x + 2y = 80
 The area is:
 A = x * y
 The area as a function of a variable is:
 A (x) = x * (40-x)
 Rewriting we have:
 A (x) = 40x-x ^ 2
 We derive the function:
 A '(x) = 40-2x
 We equal zero and clear x:
 40-2x = 0
 2x = 40
 x = 40/2
 x = 20 feet
 The other dimension is:
 y = 40 - x
 y = 40 - 20
 y = 20 feet
 The area will be:
 A = x * y
 A = 20 * 20
 A = 400 feet ^ 2
 Answer:
 
The dimensions are:
 
x = 20 feet
 
y = 20 feet
 
The area is:
 
A = 400 feet ^ 2
5 0
4 years ago
The radius of a circle with area A is approximately √A/3. The area of a circular mouse pad is 54 square inches. Estimate its rad
Gnesinka [82]

Answer:

4.2

Step-by-step explanation:

First I did 54 divided by 3 which is 18.  Then I found the square root of 18.

3 0
3 years ago
Which soap deal has the lowest price per ounce?
Tom [10]
It’s 5.75 for 14 oz. It’s answer is 0.41 which is the lowest out of all of them.
7 0
3 years ago
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Complete the solution of the equation. Find the value of y when x equals -2. -4x+8y=-24 ​
zepelin [54]

Answer:y=-4

Step-by-step explanation:

Multiply -4 by -2 you get positive 8 rewrite the equation subtract 8 from both sides that leaves you with 8y=-32 your final step is to divide both sides 8 that leaves you with -4 which is the answer.

5 0
3 years ago
Read 2 more answers
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