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Drupady [299]
4 years ago
12

Frank needs to make a 420 mile trip in 7 hours. Write and solve an equation to determine what speed he should average.

Mathematics
1 answer:
salantis [7]4 years ago
4 0
420\7=60
The answer is 60
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American kestrels live in More Mesa near your professor’s house. Suppose that there are 100 birds, of which a random sample of s
Ulleksa [173]

Answer:

P(X=3) = 0.2013

Step-by-step explanation:

After taking and tagging the first 20 birds, then we have a proportion of 20% of tagged birds within the population, that is

p=\frac{n}{N}

p=\frac{20}{100}=0.20

Supposing that the probability (0.20) of capturing a bird <em>remains constant</em>, we may resolve it as it follows:

Capturing 10 birds can be considered as a binomial experiment with a success probability p = 0.2

Let, P(X=x)=nCx*p^{x}*(1-p)^{n-x} be the expression of the binomial distribution, for our case we have:

p=0.2

x = 3

n=10

Then,

P(X=3)=10C3*0.2^{3}*0.8^{10-3}

P(X=x)=0.2013

Therefore, the probability that exactly 3 of the 10 birds in the new sample were previously tagged is 20.13%

5 0
3 years ago
Which best describes how the graph of g(x) = 1/9 x relates to the graph of the parent function, f(x) = x ?
lawyer [7]
The graph of g(x) is stretched vertically by a factor of 1/3.
7 0
3 years ago
2 (x + 6) = 36 what’s is x
dedylja [7]

Answer:

12

Step-by-step explanation:

distribute the 2, turning the equation into 2x+12=36

subtract 12 from both sides, now resulting in 2x=24

then divide by 2

6 0
3 years ago
Read 2 more answers
Solve for b in the literal equation y = 17x + 17b
ankoles [38]

Answer:

b= -x+ y/17

Step-by-step explanation:

1. Subtract 17x from both sides of the equation in order to isolate b on one side.

y -17x= 17b

2. Divide every term by 17 in order to isolate b from any coefficients.

y/17 -17x/17 = 17b/17

3. Simplify

b= -x+y/17

5 0
3 years ago
Sidney bought to magazines that were each $4.95
Agata [3.3K]

Step-by-step explanation:

If you are multiplying it may be

<h3>9.9</h3>

If you are dividing it may be

<h3>2.475</h3><h3 /><h3>You didn't add the full question so I don't know what you are asking, but this may help.</h3>
4 0
3 years ago
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