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mash [69]
2 years ago
14

Help me if you can please

Mathematics
1 answer:
Luden [163]2 years ago
8 0

Answer:

the question is not visible

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If a(x) = 3x + 1 and (x)= x-4, what is the domain of (boa)(x)?
Ipatiy [6.2K]

I am assuming you meant to write b(x) = x-4.

(b \circ a)(x)=b(a(x))=b(3x+1)=(3x+1)-4=\boxed{3x-3}

Since this is a linear function, the domain is all real numbers.

4 0
2 years ago
Elk middle school has 264 students. There are 84 students in the eighth grade. There are 22 fewer seventh-grade students than si
Vinvika [58]

Answer:

There were 84 students in 6th grade, 68 in 7th grade, and 90 in 8th grade.

Step-by-step explanation:

Given that Elk middle school has 264 students, and there are 84 students in the eighth grade, and there are 22 fewer seventh-grade students than sixth-grade students, to determine how many students there are in each grade, the following calculation must be performed:

(264 - 84) / 2) - 22 = X

(180/2) - 22 = X

90 - 22 = X

68 = X

6th grade = 84

7th grade = 68

8th grade = 90

Therefore, there were 84 students in 6th grade, 68 in 7th grade, and 90 in 8th grade.

3 0
3 years ago
Suppose that an experiment consists of flipping a coin 3 times and observing the resulting sequence of heads and tails. Find the
ki77a [65]

Using the binomial distribution, it is found that there is a 0.125 = 12.5% probability of observing exactly 3 tails.

<h3>What is the binomial distribution formula?</h3>

The formula is:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

In this problem, considering 3 tosses of a fair coin, the parameters are n = 3 and p = 0.5.

The probability of 3 tails is P(X = 3), hence:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{3,3}.(0.5)^{3}.(0.5)^{0} = 0.125

0.125 = 12.5% probability of observing exactly 3 tails.

More can be learned about the binomial distribution at brainly.com/question/24863377

3 0
2 years ago
What is 3025/10000 in simplest form?
gulaghasi [49]
101/400 or .3025 is your answer
6 0
3 years ago
Mr. Arnold is buying dry-erase markers for his classroom. He already has 7 markers. Mr. Arnold buys 5 packs with 7 markers each
klemol [59]

Answer: 7+5(7)+8(4)-2

Step-by-step explanation:

that’s the answer

3 0
3 years ago
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