3 years ago

1pt

Mathematics

1 answer:

scoundrel [369]3 years ago

8 0

The answer to this question is a

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4. Kristina is allowed to have a friend sleep over every 3rd weekend,

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Answer:

Step-by-step explanation:

You must find the least common multiple of their schedules.

The numbers 3 and 2 are their own prime factors, so the least common multiple of 3 and 2 is 6.

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3 years ago

Please help!!! I’m so confused on how to solve this!

-Dominant- [34]

Let's first write the equation given

x²+6x-13=0

They have told us to use "Completing the square" method.

So we need write x²+6x-13 as a whole square.

x²+6x-13=0

x²+(2*3*x)-9-4 = 0

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Now we can write the LHS as:

(x - 3)²=2²

Hence,

x-3 can either be 2 or -2

Now,

x - 3=2

x=5

Or,

x - 3=-2

x=1

Therefore now we know that x can either be 1 or 5. So the correct answer is Option B.

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3 years ago

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