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tino4ka555 [31]
3 years ago
10

Which is the slope for the relationship shown in the table?

Mathematics
2 answers:
Alexxandr [17]3 years ago
7 0
ANSWER:
_________

2/3

EXPLANTION:

____________

To find the slope the equation is
y2 minus y1 / x2 minus x1

Next you have to pick two points, the points I picked are (4,2) and (7,4)

y2 = 4

y1 = 2

x2 = 7

x1 = 4

4 - 2 / 7 - 4

The final answer would be 2/3 :)

FUN FACT:

__________

McDonald’s once made bubblegum-flavored broccoli

I hope this helped! And have a •AMAZING• day :3
Mama L [17]3 years ago
3 0

Answer:

2/3

Step-by-step explanation:

i graphed it on desmos lol

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First you need to use the distributive property:   27(x+4)=-6 
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then you need to subtract 108 from -6 to
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aleksley [76]

Answer:

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b. 0.5283 = 52.83% probability that at least four qualify for the favorable rates

Step-by-step explanation:

For each Puerto Rico resident, there are only two possible outcomes. Either they qualify for discounted rates, or they do not. The probability of a person in the sample qualifying for discounted rates is independent of any other person in the sample. This means that the binomial probability distribution is used 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.

70% of the island residents of Puerto Rico have reduced their electricity usage sufficiently to qualify for discounted rates.

This means that p = 0.7

Five residential subscribers are randomly selected from San Juan, Puerto Rico

This means that n = 5

a. All five qualify for the favorable rate

This is P(X = 5). So

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

P(X = 5) = C_{5,5}.(0.7)^{5}.(0.3)^{0} = 0.1681

0.1681 = 16.81% probability that all five qualify for the favorable rate.

b. At least four qualify for the favorable rates

This is

P(X \geq 4) = P(X = 4) + P(X = 5)

So

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

P(X = 4) = C_{5,4}.(0.7)^{4}.(0.3)^{1} = 0.3602

P(X = 5) = C_{5,5}.(0.7)^{5}.(0.3)^{0} = 0.1681

P(X \geq 4) = P(X = 4) + P(X = 5) = 0.3602 + 0.1681 = 0.5283

0.5283 = 52.83% probability that at least four qualify for the favorable rates

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Step-by-step explanation:

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