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Maslowich
2 years ago
13

21) Solve x2 - 13x - 30 = 0 by factoring.

Mathematics
2 answers:
stepan [7]2 years ago
7 0

Answer:

x=15 or x=-2

Step-by-step explanation:

x^2-13x-30=0

First find the multiples of 30 that will also equal to 13.

6*5=30 ,15*2=30 and 10*3=30

  1. x^2-15x+2x-30=0
  2. x(x-15)+2(x-15)=0
  3. (x-15)(x-2)=0
  4. x-15=0 or x+2=0
  5. x=15 or x=-2
stellarik [79]2 years ago
3 0

Answer:

x= 15, -2!!!!!!!!!!!!!!

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astra-53 [7]

Answer:

9000 metres

Step-by-step explanation:

He went on a 54 km hike. First, we have to find this distance in metres.

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To find how many metres he walked each day, we divide the total distance he hiked by the number of days spent. That is:

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Answer:

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Sara is 9 years younger than her brother, Michael. The sum of their ages is 47 years. How old is Sara and how old is her brother
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djverab [1.8K]

Answer:

5

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