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4 years ago

What’s the correct answer for this?

Mathematics

2 answers:

Dmitrij [34]4 years ago

7 0

Answer:

A = 13.0

Step-by-step explanation:

In the attached file

Klio2033 [76]4 years ago

3 0

6.7 should be the correct answer

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A) Antoine's family is taking a summer vacation through the northern united states on day one of the trips the family will be tr

kirill115 [55]

Answer:

Step-by-step explanation:

We are expected to convert from miles to kilometer

first day 85 miles =136.794km

Second day 125 mile=201.168km

third day 176 miles =283.245km

Total distance covered is

136.794km+201.168km+283.245km=621.207km

Therefore the total distance in kilometer is 621.207km

8 0

3 years ago

Solve and check: ½ (c – 24) + 2/3c = 9

Taya2010 [7]

The answer is see you happy new year

4 0

3 years ago

Suppose that 10% of the undergraduates at a certain university are foreign students, and that 25% of the graduate students are f

Deffense [45]

Answer:

0.6154 = 61.54% probability that the student is an undergraduate

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Foreign

Event B: Undergraduate.

There are four times as many undergraduates as graduate students

So 4/5 = 80% are undergraduate students and 1/5 = 20% are graduate students.

Probability the student is foreign:

10% of 80%

25% of 20%. So

$P(A) = 0.1*0.8 + 0.25*0.2 = 0.13$

Probability that a student is foreign and undergraduate:

10% of 80%. So

$P(A \cap B) = 0.1*0.8 = 0.08$

What is the probability that the student is an undergraduate?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.08}{0.13} = 0.6154$

0.6154 = 61.54% probability that the student is an undergraduate

8 0

3 years ago

Expand. (n^2 -3n +1)(2n + 3) =

sukhopar [10]

Answer:

$2n^3-3n^2-7n+3$

Step-by-step explanation:

$(n^2 -3n +1)(2n + 3) =\\n^2(2n) - (3n)(2n) + (1)2n + (n^2)(3) + (-3n)(3) + (1)(3)=\\2n^3 - 6n^2 + 2n + 3n^2 -9n + 3 =\\$

Collecting like terms and simplifying yields

$2n^3-3n^2-7n+3$

8 0

2 years ago

Abe, Bob, Carl, Dan and Earl are going to stand in line for a photo. What is the probability that the boys will stand in alphabe

Levart [38]

Answer:

0.0083 = 0.83% probability that the boys will stand in alphabetical order from left to right in the picture

Step-by-step explanation:

Probability:

A probability is given by the number of desired outcomes divided by the number of total outcomes.

Arrangments of x elements:

The total number of arrangments of x elements is given by:

$A_{x} = x!$

Desired outcomes:

Standing in alphabetical order, so only 1 possible outcome, which means that $D = 1$

Total outcomes:

Arrangments of 5 people, so

$T = A_{5} = 5! = 120$

Probability:

$p = \frac{D}{T} = \frac{1}{120} = 0.0083$

0.0083 = 0.83% probability that the boys will stand in alphabetical order from left to right in the picture

4 0

3 years ago