Find a number whose product with 7 is the same as its sum with 18

Mathematics

1 answer:

SSSSS [86.1K]4 years ago

7 0

7 + 18 = 25
25 ÷ 7 = 3.5714285714285714285

so 3.5714285714285714285 is the answer

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Solve the word problem. Check to see if the answer needs to be simplified. Remember to label your answer with the appropriate ab

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anyanavicka [17]

Answer:

x=0, y=-12

Step-by-step explanation:

you can use substitution to solve for x

-3(x-12)=2x+36

-3x+36=2x+36

subtract 36 from both sides and add 3x to both sides

0=5x

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now plug in 0 as x for either equation

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to check your work plug in x and y into the other equation

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3 years ago

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Sedbober [7]

i = $p(0) = \frac {3} {8} x \frac {2} {7} = \frac
{3} {28} ; p (1) = \frac {3} {8} x \frac {5} {7} + \frac {5} {8} x \frac {3}
{7} = \frac {15} {28}; p (2) = \frac {5} {8} x \frac {4} {7} = \frac {5} {14}
$

<span>(a) </span>i. The probability mass function of X is 5 / 14

Hypergeometric Distribution is the probability distribution of a hypergeometric random variable.

The hypergeometric distribution is used to calculate the statistical importance of having drawn a specific k successes (out of n total draws) from the aforementioned population in the hypergeometric test uses.

ii. Please see attached image for the answer.