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VMariaS [17]
2 years ago
6

How to find a domain and range and express it in a function

Mathematics
1 answer:
harina [27]2 years ago
4 0

Answer: To find the excluded value in the domain of the function, equate the denominator to zero and solve for x .

Step-by-step explanation:

For example, in the problem below The domain of the function is set of real numbers except −3 . The range of the function is same as the domain of the inverse function. So, to find the range define the inverse of the function.

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Estelle bought 7.2 pounds of oatmeal and gave 6.1 pounds of it to a neighbor. How much
Harman [31]

Answer:

1.1

Step-by-step explanation:

7.2-6.1

3 0
3 years ago
Factor this trinomial completely.
kifflom [539]

Answer:

2 ( x+3) (x+1)

Step-by-step explanation:

2x^2+8x+6

Factor out a 2

2(x^2 +4x+3)

Factor in side the parentheses

What multiply to 3 and adds to 4  (3(1=3  3+1 =4)

2 ( x+3) (x+1)

8 0
3 years ago
Find the x-intercepts (solve for x) for the following AND PLEASE SHOW YOUR WORK!
alekssr [168]

Answer:

hope it may help but I wasnt able to find y cause no question

4 0
3 years ago
The letter tiles shown below are in a bag. Without looking I am going to draw one tile. What are my chances of getting a g i,o,a
netineya [11]

Total of number= 10

Number of A's=3

3/10 = 0.3

The answer is already in simplest

4 0
3 years ago
an oil company conducts a geological study that indicates that an exploratory oil well should have a 20% chance of striking oil.
bazaltina [42]

Answer:

4.92% probability that the third strike comes on the seventh well drilled

Step-by-step explanation:

For each drill, there are only two possible outcomes. Either it is a strike, or it is not. Each drill is independent of other drills. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

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

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

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

And p is the probability of X happening.

20% chance of striking oil.

This means that p = 0.2

What is that probability that the third strike comes on the seventh well drilled

2 stikers during the first 6 drills(P(X = 2) when n = 6)[/tex]

Strike during the 7th drill, with 0.2 probability. So

P = 0.2P(X = 2)

In which

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

P(X = 2) = C_{6,2}.(0.2)^{2}.(0.8)^{4} = 0.2458

Then

P = 0.2P(X = 2) = 0.2*0.2458 = 0.0492

4.92% probability that the third strike comes on the seventh well drilled

3 0
3 years ago
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