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WINSTONCH [101]
3 years ago
13

Because the length cannot be negative the height of the plane is ___ miles.

Mathematics
1 answer:
Rudik [331]3 years ago
8 0

Look at all the steps above. They lead to a double solution. The symbol

x=\pm 5

means that x can be either positive or negative 5. You can't accept negative values for lengths, so you're left with one option only.

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Alexis wants to make a paperweight at pottery class. He designs a pyramid-like mode l with a base area of 100 square centimeters
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Answer:

\frac{3}{2} g/cm²

Step-by-step explanation:

First, we need to find the volume of the prism. The volume of a square pyramid is V = Bh/3

B = 100 cm²

h = 6 cm

V = 100 cm² * 6 cm /3

V = 600 cm³ /3

V = 200 cm³

Next, we need to solve for the density based on the desired volume and mass.

m = mass = 300 g

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density = 300 g / 200 cm³

density = 3/2 g/cm³

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You measure 20 turtles' weights, and find they have a mean weight of 45 ounces. Assume the population standard deviation is 11.5
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Answer: the maximal margin of error associated with a 90% confidence interval for the true population mean turtle weight = 4.23

Step-by-step explanation:

Formula for margin of error : E=\dfrac{z^*\times (Population\ standard\ deviation)}{\sqrt{Sample\ size}}

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