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svp [43]
3 years ago
5

Ava has two frogs. This is 1/4 the number of frogs that Heather has. How many frogs does Heather have?

Mathematics
2 answers:
oksano4ka [1.4K]3 years ago
7 0

Answer:

8

Step-by-step explanation:

2 x 4

fenix001 [56]3 years ago
5 0

Answer:

Half of 2 is 1

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Suppose heights of seasonal pine saplings are normally distributed and have a known population standard deviation of 17 millimet
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296.693\leq x\leq 319.307

Step-by-step explanation:

The confidence interval for the population mean x can be calculated as:

x'-z_{\alpha /2}\frac{s}{\sqrt{n} } \leq x\leq x'+z_{\alpha /2}\frac{s}{\sqrt{n} }

Where x' is the sample mean, s is the population standard deviation, n is the sample size and z_{\alpha /2} is the z-score that let a proportion of \alpha /2 on the right tail.

\alpha is calculated as: 100%-99%=1%

So, z_{\alpha/2}=z_{0.005}=2.576

Finally, replacing the values of x' by 308, s by 17, n by 15 and z_{\alpha /2} by 2.576, we get that the confidence interval is:

308-2.576\frac{17}{\sqrt{15} } \leq x\leq 308+2.576\frac{17}{\sqrt{15} }\\308-11.307 \leq x\leq 308+11.307\\296.693\leq x\leq 319.307

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3 years ago
Let each Square represent 1/3 unit by 1/3 unit.
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Angle 3 is 65 degrees. Identify all the other angles that measure 65 degrees.
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Angles 2, 6, and 7 because angle 1 = 115 so that makes angle 4 = 115 so angle 2 must also be 65 so angle 4 and 2 = 180 and the same goes for angles 5,6,7,8
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