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2 years ago

Help me with another math question

Mathematics

2 answers:

Genrish500 [490]2 years ago

5 0

Answer:

Step-by-step explanation:

Andreas93 [3]2 years ago

5 0

Answer:

x = 3

y = -1

( 3, -1 )

Step-by-step explanation:

5x + 2y = 13

3x - y = 10

Multiply "3x - y = 10 " by 2

5x + 2y = 13

6x - 2y = 20

Cancel out +2y and -2y

11x = 33

Divide both sides by 11

x = 3

<h2>Substitute Into any equation:</h2>

3(3) - y = 10

9 - y = 10

-y = 1

y = -1

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alexdok [17]

Answer: 0.009

Step-by-step explanation:

Formula we use here : Binomial distribution formula

Probability of getting success sin x trial = $P(X)=^nC_xp^x(1-p)^{n-x}$ , where n is the sample size and p is the probability of success in each trial .

Given : A study conducted at a certain college shows that 65% of the school's graduates find a job in their chosen field within a year after graduation.

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Now, the probability that 11 randomly selected graduates all find jobs in their chosen field within a year of graduating:-

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faltersainse [42]

Answer:

$\left\{\begin{matrix}39 & x\leq 200\\ 39+(x-200)\times 0.35 & x>200\end{matrix}\right.$

Step-by-step explanation:

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So, when $x>200$

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$\left\{\begin{matrix}39 & x\leq 200\\ 39+(x-200)\times 0.35 & x>200\end{matrix}\right.$

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