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valentinak56 [21]
3 years ago
11

The equations in this system were added to solve for y. What is the value of y? x + 6 y = 10. Minus x + 3 y = negative 15. Equal

s 9 y = negative 5.
Mathematics
1 answer:
zheka24 [161]3 years ago
7 0

Answer:

y = -5/9

Step-by-step explanation:

Answered it by using Photo Math :)

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Antonette gets $70\%$ on a 10-problem test, $80\%$ on a 20-problem test and $90\%$ on a 30-problem test. If the three tests are
notka56 [123]

Answer:

Percentage score will be 83.33 %

Step-by-step explanation:

We have given Antonette gets 70 % on 10 problem test

Let consider here here total problem = total marks

So marks get 10 10 problem test = 10×0.7 = 7

Marks get in 20 problem test = 20×0.8 = 16

And marks get in 30 problem test = 30×0.9 = 27

Now total marks get get by Antonette = 7 +16 + 27 = 50

And total marks = 60

So percentage score of Antonette =\frac{50}{60}\times 100=83.33 %

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3 years ago
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qwelly [4]

Answer:

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Step-by-step explanation:

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3 years ago
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TEA [102]

Answer:

Step-by-step explanation:

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7 0
2 years ago
Read 2 more answers
A single fair die is rolled. What if event A stays the same, i.e., A={2,4} but B={2,4,5}. Event A is independent with event B. T
den301095 [7]

Answer:

False.

Event A and event B are not independent.

Step-by-step explanation:

We know that event A and event B are

A= {2,4} and B= {2,4,5}.

If the following condition satisfies then event A and event B are independent:

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Now A and B=?

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A and B=A∩B={2,4}

The single fair die results in 6 outcomes so, the sample space will contain 6 elements.

Thus,

P(A∩B)=2/6=1/3

P(A)=2/6=1/3

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P(A)*P(B)=1/3*1/2=1/6

As,

P(A∩B)≠P(A)*P(B)

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3 years ago
9. Arrange 3 519;3951; 3191 in descending order.​
svlad2 [7]

Answer:

3951>3519>3191

Step-by-step explanation:

hope you understood how

3 0
3 years ago
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