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balu736 [363]
3 years ago
9

Helppppp!!!! I don’t understand it

Mathematics
1 answer:
oksian1 [2.3K]3 years ago
6 0
Okay so for 2x-y > 3
Subtract -2 from each side
-y>-2x+3
Divide by -1
And when you divid you gotta switch signs
So it’s y<2x-3

3x-5y less than and equal to 25
Subtract 3
-5y is less than and equal to -3x+25
Then divide by -5
Flip since we divide
Y more than and equal to 3/5x-5
We always flip signs when we divid or multiple
I hope this help
Sorry if I’m wrong
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Answer:

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Step-by-step explanation:

There is only one x value that satisfies the equation.

4x + 1 = 3

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x = 1/2

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\frac{4}{9}

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Three rats in a lab are injected a type of medicine. The independent probabilities for each rat exhibiting side effects are 0.5,
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Step-by-step explanation:

There are four possible values of X: 0 rats show side effects, 1 rat shows side effects, 2 rats show side effects, or all 3 rats show side effects.

Probability X = 0:

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P = 0.21

Probability X = 1:

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Probability X = 2:

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7 0
3 years ago
There are 6 sixth graders , 7 seventh graders , and 8 eight graders entered in a contest.
fgiga [73]

Answer:

See below ~

Step-by-step explanation:

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  • 2/7

<u>P (6th grader after)</u>

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<u>Question 1 : P (Both 6th graders)</u>

  • P = P (6th grader) × P (6th grader after)
  • P = 2/7 x 1/4 = 2/28 = <u>1/14</u>

<u></u>

<u>Question 2 : P' (Both 6th graders)</u>

  • P' = 1 - P
  • P' = 1 - 1/14
  • P' = <u>13/14</u>
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2 years ago
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