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3 years ago

Classify the following triangle. Check all that apply.

Mathematics

2 answers:

Vilka [71]3 years ago

7 0

Answer:

B and D.

Step-by-step explanation:

the angles are less than 90, making it acute. The triangle has all sides equal, making it an equilateral.

Hope this helps!

Ray Of Light [21]3 years ago

5 0

Answer:

B and D

Step-by-step explanation:

It is an Acute triangle because all the angles are acute, meaning all the angles are less than 90°.

It is an Equilateral triangle because all the sides are equal. Shown in the picture, the lines going through all the sides mean that they are all the same length.

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3 years ago

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2 years ago

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posledela

Answer:

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3 years ago

6. A car dealership would like to estimate the mean mpg of its new model car with 90% confidence. The population is normally dis

Yakvenalex [24]

Answer:

92.9997< $\mu$ <99.5203

Step-by-step explanation:

Using the formula for calculating the confidence interval expressed as:

CI = xbar ± Z * S/√n where;

xbar is the sample mean

Z is the z-score at 90% confidence interval

S is the sample standard deviation

n is the sample size

Given parameters

xbar = 96.52

Z at 90% CI = 1.645

S = 10.70.

n = 25

Required

90% confidence interval for the population mean using the sample data.

Substituting the given parameters into the formula, we will have;

CI = 96.52 ± (1.645 * 10.70/√25)

CI = 96.52 ± (1.645 * 10.70/5)

CI = 96.52 ± (1.645 * 2.14)

CI = 96.52 ± (3.5203)

CI = (96.52-3.5203, 96.52+3.5203)

CI = (92.9997, 99.5203)

<em>Hence a 90% confidence interval for the population mean using this sample data is 92.9997<</em> $\mu$ <em><99.5203</em>

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3 years ago