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2 years ago

Solve the following system by graphing and identify the point of intersection

Mathematics

1 answer:

Andrei [34K]2 years ago

3 0

-0.6x - 0.5y = 1.3
0.5x - 0.5y = -2
---------------------------subtract
-1.1x = 3.3
x = -3

0.5x - 0.5y = -2
0.5(-3) - 0.5y = -2
-1.5 - 0.5y = -2
0.5y = 0.5
y = 1

Solution (-3, 1)

Answer is the last one
(-3, 1)

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Among 35 students in a class, 20 of them earned A's on the midterm exam, 13 earned A's on the nal exam, and 12 did not earn A's

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Answer:

The correct answer is " $\frac{2}{7}$ ".

Step-by-step explanation:

According to the question,

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Find the probability of at least 6 failures in 7 trials of a binomial experiment in which the probability of success in any one

ziro4ka [17]

The probability of at least 6 failures in 7 trials of a binomial experiment in which the probability of success in any one trial is 9% will be <u>0.000343311 %</u>

<h3>What is the probability?</h3>

Probability is synonymous with possibility. It is concerned with the occurrence of a random event.

Probability can only have a value between 0 and 1. Its simple notion is that something is very likely to occur. It is the proportion of favorable events to the total number of events.

No of failure,n = 7

No of trials,x≥6

A binomial probability is represented as;

$\rm P(x) = nC_x p^z(1-p)^{n-r}$

Substitute the given data;

$P(x \geq 6) = 7C_6 \times 9^6 \times 91-9)^{7-6} +7C_7 (9)^7+(1-9)^{(7-7)}$

$\rm P(x \geq 6) = 0.000000343311 \\\\ P(x \geq6)=0.000343311 \%$

Hence,the probability of at least 6 failures in 7 trials of a binomial experiment in which the probability of success in any one trial is 9% will be <u>0.000343311 %</u>

To learn more about probability, refer to the link: brainly.com/question/795909.

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