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4 years ago

Solve x^2 + 5x - 6 = 0

1 answer:

4 0

Let's solve your equation step-by-step. x2+5x−6=0

Step 1: Factor left side of equation. (x−1)(x+6)=0

Step 2: Set factors equal to 0. x−1=0‌‌ or ‌‌x+6=0

x=1‌‌ or ‌‌x=−6

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With the data given, we know that the difference in cost of medical care of dogs and cats have a normal distribution with μ=-20 and σ=46.

To know the probability of the cost for the dog is higher than the cat, we have to calculate the probability of P(d>0).

Then we have to calculate z, and look up in a standarized normal distribution table.

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