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CaHeK987 [17]
3 years ago
6

How do you solve: Y=-x-3y

Mathematics
1 answer:
arlik [135]3 years ago
7 0
Add the 3y to the y ... 4y . You cannot mix the x and the y so it is 4y=-x
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In a certain Algebra 2 class of 25 students, 13 of them play basketball and 11 of them play baseball. There are 4 students who p
Flauer [41]

Answer:

\frac{4}{5}

Step-by-step explanation:

Given: There are 2 classes of 25 students.

            13 play basketball

            11 play baseball.

            4 play neither of sports.

Lets assume basketball as "a" and baseball as "b".

We know, probablity dependent formula; P(a∪b)= P(a)+P(b)-p(a∩b)

As given total number of student is 25

Now, subtituting the values in the formula.

⇒P(a∪b)= \frac{13}{25} +\frac{11}{25} -\frac{4}{25}

taking LCD as 25 to solve.

⇒P(a∪b)= \frac{13\times 1+11\times 1-4\times 1}{25} = \frac{20}{25}

∴ P(a∪b)= \frac{4}{5}

Hence, the probability that a student chosen randomly from the class plays both basketball and baseball is \frac{4}{5}.

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3 years ago
Round these numbers to the nearest ten and 100 for brainlies 50 points
Dmitrij [34]

Answer:

1. 650, 700 2. 840, 800 3. 370, 400 4. 80, 100 5. 620, 600 6. 250, 200 7. 970, 1,000 8. 330, 300 9. 450, 400 10. 210, 200 11. 100, 100 12. 710, 700

Step-by-step explanation:

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Find the least positive angle measurement that is coterminal with -230
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I think the correct one is C. 130
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The area of the base of this prism is 35cm^2 , what is the volume of the prism
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V=Bh what is the height of the prism? You do (35^2 )(height)
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Which expression is equivalent to -6/7+5/2
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C = 5/2 - 6/7

Step-by-step explanation:

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