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2 years ago

If a quadratic function has x-intercepts at (-7,0) and 10,0), where would

Mathematics

1 answer:

madam [21]2 years ago

8 0

Answer:

x = 1.5

Step-by-step explanation:

Since the axis of symmetry is between the 2 x intercepts, we can find it by finding the average of the x-coordinates of the 2 points.

(-7 + 10) / 2

3/2

= 1.5

So, the axis of symmetry is at x = 1.5

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2 years ago

The population standard deviation for the temperature of beers found in Scooter's Tavern is 0.26 degrees. If we want to be 90% c

siniylev [52]

Answer:

19 beers must be sampled.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

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This means that $\sigma = 0.26$

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$0.1\sqrt{n} = 1.645*0.26$

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3 years ago

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