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seraphim [82]
3 years ago
11

Help me please!! This is timed and I’m stuck

Mathematics
2 answers:
marshall27 [118]3 years ago
5 0

Answer:

  • B. 13/2

Step-by-step explanation:

<u>Given equation:</u>

  • 2x² + 7x - 15 = 0

It has roots r and s.

We know how to find the sum and product of roots.

<u>Sum of roots:</u>

  • r + s = -7/2

<u>Product of roots:</u>

  • rs = -15/2

<u>Use the above two equations to work out the value of r - s:</u>

  • r - s = \sqrt{(r - s)^2}  =
  • \sqrt{(r+s)^2-4rs} =
  • \sqrt{(-7/2)^2-4(-15/2)} =
  • \sqrt{169/4} =13/2

Correct choice is B

Brums [2.3K]3 years ago
3 0

Answer:

D is the correct answer

Step-by-step explanation:

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Answer:

  the point is (3, 3) . . . . . . y = 3

Step-by-step explanation:

Write the point-slope equation of the line through the point you know. Then evaluate that equation for x=3 to see what the value of y is.

Point-slope form:

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4 0
3 years ago
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Alja [10]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
The school can food drive has collected an average of 171 cans of food per month from january to june. the balance at the end of
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Answer:

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4 0
2 years ago
1. Which represents the type of sequence: -99, -96, -92, -87, -81, …?
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So here are the answers for the given questions above:
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Based on the given values above, the values have a common ratio of 1.1. So what we are going to do is just to multiply 1.1 each time and by 2016, we will get </span>121,520.
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Answer:

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Step-by-step explanation:

Hope it helps

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