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Nastasia [14]
3 years ago
5

What’s the correct answer

Mathematics
2 answers:
liberstina [14]3 years ago
6 0
I believe the answer is A
slavikrds [6]3 years ago
3 0
The correct answer is A
You might be interested in
Evaluate the expression when a is -5 and y is 7
sasho [114]

a - 5y

when a = -5 and y = 7 :

( - 5) - 5(7) =  - 5 - 35 =  - 40

Answer: -40

ok done. Thank to me :>

7 0
2 years ago
According to the Department of Transportation, 27% of domestic flights were delayed in the last year at JFK airport. Five flight
Mars2501 [29]

Answer:

The probability that all the five flights are delayed is 0.2073.

Step-by-step explanation:

Let <em>X</em> = number of domestic flights delayed at JFK airport.

The probability of a domestic flight being delayed at the JFK airport is, P (X) = <em>p</em> = 0.27.

A random sample of <em>n</em> = 5 flights are selected at JFK airport.

The random variable <em>X</em> follows a Binomial distribution with parameters <em>n</em> and <em>p</em>.

The probability mass function of <em>X</em> is:

P(X=x)={5\choose x}0.27^{x}(1-0.27)^{5-x};\ x=0,1,2...

Compute the probability that all the five flights are delayed as follows:

P(X=5)={5\choose 5}0.27^{5}(1-0.27)^{5-5}=1\times 1\times 0.207307=0.2073

Thus, the probability that all the five flights are delayed is 0.2073.

4 0
3 years ago
Help?????????????????
Law Incorporation [45]

Answer:

54 lbs.

Step-by-step explanation:

7 x 6 = 42

3 x 4 = 12

42+12=54

3 0
3 years ago
Water is being pumped into a 12-foot-tall cylindrical tank at a constant rate.
Stels [109]

Answer:

4 feet

Step-by-step explanation:

It is given that:

• At 2:30 p.m., the water depth was 2.6 feet.  

• It is now 5:00 p.m., and the depth of the water is 3.6 feet.

So in 2.5 hours ( 5pm - 2:30pm) the water rose 1 feet (3.6 - 2.6).

Now <em><u>we can find how much water rises in 1 hour by setting up a ratio (let x be the depth increase of water in 1 hr):</u></em>

\frac{2.5}{1}=\frac{1}{x}\\2.5x=1*1\\2.5x=1\\x=\frac{1}{2.5}\\x=0.4

So, in 1 hour, the water level will rise 0.4 feet

So, at 6pm (1 hour from 5 pm) it will rise to 3.6 + 0.4 = 4 feet

8 0
3 years ago
What is the solution to the proportion 3y-8/12=y/5? can someone help me do this?
RideAnS [48]
   
\displaystyle\\&#10; \frac{3y-8}{12} = \frac{y}{5}  \\  \\ &#10;5(3y-8)=12y\\\\&#10;15y-40=12y\\\\&#10;3y = 40\\\\&#10;\boxed{y =  \frac{40}{3}}



3 0
3 years ago
Read 2 more answers
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