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Dafna11 [192]
3 years ago
14

Help me and I’ll give you brainliest

Mathematics
1 answer:
Oliga [24]3 years ago
7 0

Answer:

i think its 60

Step-by-step explanation:

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[2x + 3y = 1][5x - 4y = 14]
sergejj [24]

Answer:

x = 2

y = - 1

Step-by-step explanation:

Please see the step by step solution in the picture attached below.

Hope it can help you. Have a nice day!

8 0
3 years ago
Suppose that 3 balls are chosen without replacement from an urn consisting of 5 white and 8 red balls. Let Xi equal 1 if the ith
Katarina [22]

Answer:

The joint probability mass function table is provided below.

Step-by-step explanation:

The experiment consist of drawing 3 balls from an urn containing 5 white and 8 red balls.

The random variable <em>Xi</em> is defined as follows:

<em>Xi</em> = 1; if the ith ball is white

<em>Xi</em> = 0; otherwise.

Then <em>X</em>₁ = the 1st ball is white and <em>X</em>₂ = the 2nd ball is white.

The sample space is as follows:

S = {(X₁ = 0, X₂ = 0), (X₁ = 0, X₂ = 1), (X₁ = 1, X₂ = 0), (X₁ = 1, X₂ = 1)}

Compute the probability of each event in the sample space as follows:

P(X_{1} = 0, X_{2}= 0)=\frac{8}{13} \times\frac{7}{12}=\frac{14}{39}

P(X_{1} = 0, X_{2}= 1)=\frac{8}{13} \times\frac{5}{12}=\frac{10}{39}

P(X_{1} = 1, X_{2}= 0)=\frac{5}{13} \times\frac{8}{12}=\frac{10}{39}

P(X_{1} = 1, X_{2}= 1)=\frac{5}{13} \times\frac{4}{12}=\frac{5}{39}

The joint probability mass function table is provided below.

4 0
3 years ago
Which of the following equations have no solution? Select all that apply.
12345 [234]

Answer:

-4 and -1

Step-by-step explanation:

If a number is in a absolute value sign it can never be negative.

5 0
3 years ago
Read 2 more answers
Anyone willing to answer this?
dexar [7]

Answer:

D:he deposits $10 per week

Step-by-step explanation:

6 0
4 years ago
The temperature today was 81F and at night it went down 11F. Which statement is
NikAS [45]

Answer:

the last one is correct 81+(-11)

it would equal 70 degrees F

8 0
3 years ago
Read 2 more answers
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