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olga nikolaevna [1]
2 years ago
10

Find b such that the points A(2,b),B(5,5)and C(-6,0) are the vertices of right angled  with angle < BAC = 90 degree.​

Mathematics
2 answers:
kipiarov [429]2 years ago
7 0

The <BAC angle isn't a perfect right angle because the image was a photo

<em><u>If this helped, please consider picking this answer as the Brainliest Answer. Thank you!</u></em>

Inessa05 [86]2 years ago
7 0

Answer:

  • b = -3 or b = 8

Step-by-step explanation:

We know that the perpendicular lines have negative-reciprocal slopes.

In other words, their product is - 1.

<u>Find the slopes of AB and AC:</u>

  • m(AB) = (5 - b)/(5 - 2) = (5 - b) / 3
  • m(AC) = (0 - b)/(- 6 - 2) = - b / - 8 = b/8

<u>Find the the product of slopes and solve for b:</u>

  • (5 - b)/3 * b/8 = - 1
  • b(b - 5)/24 = 1
  • b(b - 5) = 24
  • b² - 5b - 24 = 0
  • b² - 8b + 3b - 24 = 0
  • b(b - 8) + 3(b - 8) = 0
  • (b + 3)(b - 8) = 0
  • b = - 3 or b = 8

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yaroslaw [1]

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Answer:

  2/7

Step-by-step explanation:

Any unit fraction with a denominator between 3 and 4 will be between 1/3 and 1/4. For example, ...

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You can also go at this considering decimal equivalents.

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So, decimal numbers like 0.26, 0.295, 0.3330 are all values that are between 1/4 and 1/3.

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3 years ago
Question 3-17 i really stink at math :( it just doesnt make sense to me. alsi im failing. plz help
Trava [24]

Answer:

4,

Step-by-step explanation:

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6 0
3 years ago
A scientist has two solutions, which she has labeled Solution A and Solution B. Each contains salt. She knows that Solution A is
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Answer:

x= 44 ounces y = 66 ounces  

Step-by-step explanation:

Distribution would be an increase to find 80% salt.

Where we use 4/5 = 80 but use here 4/5.

We find 19/20 but just say 95 for solution B =

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Let y = the number of ounces of Solution B

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70x + 95y = 88    

70x + 95 y = 88

70x + 95 (88 - x) = 8800 make units equal or for start convert decimalization = same units as 2nd multiplied value.

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3 years ago
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On expanding this:

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4 0
2 years ago
Felix wants to buy some lemonade for the dinner party.
Xelga [282]

Answer:

Yes. Felix is correct.

Step-by-step explanation:

Find out how much ml does a can of lemonade have, I would assume its 330ml since I searched up the ml of a lemonade can.

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So Felix is correct about 2 packs of 8 cans is more than 5 bottles of 1 litre.

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