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3 years ago

8

How do I solve this??

2 answers:

scZoUnD [109]3 years ago

8 0

I hope this is helpful

Reika [66]3 years ago

3 0

Answer:

f(x) = -1

Step-by-step explanation:

Since f(x) is a function for the variable x, we replace every x in the expression with 2 (the given value of x). Therefore, f(x) = 3(2) - 7, f(x) = 6 - 7, f(x) = -1.

You might be interested in

Two consecutive integers whose sum is -29

djverab [1.8K]

X+x+1=-29
x+x=-29-1
2x=-28
2x/2=-28/2
x=-14

Answer x=-14, x+1=-15

8 0

3 years ago

According to national data, 5.1% of burglaries are cleared with arrests. A new detective is assigned to six different burglaries

blagie [28]

Answer:

26.95% probability that at least one of them is cleared with an arrest

Step-by-step explanation:

For each burglary, there are only two possible outcomes. Either it is cleared, or it is not. The probability of a burglary being cleared is independent of other burglaries. 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.

5.1% of burglaries are cleared with arrests.

This means that $p = 0.051$

A new detective is assigned to six different burglaries.

This means that $n = 6$

What is the probability that at least one of them is cleared with an arrest?

Either none are cleared, or at least one is. The sum of the probabilities of these events is 100% = 1. So

$P(X = 0) + P(X \geq 1) = 1$

We want $P(X \geq 1)$

Then

$P(X \geq 1) = 1 - P(X = 0)$

In which

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

$P(X = 0) = C_{6,0}.(0.051)^{0}.(0.949)^{6} = 0.7305$

$P(X \geq 1) = 1 - P(X = 0) = 1 - 0.7305 = 0.2695$

26.95% probability that at least one of them is cleared with an arrest

8 0

3 years ago

Is "x = 1" a function? if not please explain why.

MrRa [10]

Answer:

x = 10

Step-by-step explanation:

x is not equal to 1 is equal to 10

you see 1 is equal to I. 2= II. 3= III. 4=IV etc. hope it HELPS

8 0

3 years ago

I NEED HELP WITH THIS PLEASEEE

Alexxx [7]

Answer:

The probability of it being greater than 6 is 3/4.

Step-by-step explanation:

there are 4 outcomes, and 6 is only one of them. 3 are greater than 6, so 4 out of the 4 times the number will be greater than 6.

7 0

3 years ago

Read 2 more answers

Which equation find the volume of this? I really don't get it

Step2247 [10]

Answer:

Dont knowwwwwwww

Step-by-step explanation:

4 0

3 years ago