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BARSIC [14]
3 years ago
6

PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!!

Mathematics
2 answers:
madreJ [45]3 years ago
7 0
I’m pretty sure it’s yes. Hopes this helps :)
Ymorist [56]3 years ago
6 0

Answer: A. No, Only one Unique Triangle can Be Formed under These Conditions.

Step-by-step explanation: It is not possible for a triangle to have more than one vertex with internal angle greater than or equal to 90°, or it would no longer be a triangle.

The interior angles of a triangle always add up to 180° while the exterior angles of a triangle are equal to the sum of the two interior angles that are not adjacent to it. Another way to calculate the exterior angle of a triangle is to subtract the angle of the vertex of interest from 180°.

The sum of the lengths of any two sides of a triangle is always larger than the length of the third side

Pythagorean theorem: The Pythagorean theorem is a theorem specific to right triangles. For any right triangle, the square of the length of the hypotenuse equals the sum of the squares of the lengths of the two other sides. It follows that any triangle in which the sides satisfy this condition is a right triangle. There are also special cases of right triangles, such as the 30° 60° 90, 45° 45° 90°, and 3 4 5 right triangles that facilitate calculations. Where a and b are two sides of a triangle, and c is the hypotenuse

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The manager of a pizza chain in Albuquerque, New Mexico, wants to determine the average size of their advertised 20-inch pizzas.
7nadin3 [17]

Answer:

The sample must be of at least 48 pizzas.

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:

\alpha = \frac{1-0.9}{2} = 0.05

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.05 = 0.95, so z = 1.645

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

In which \sigma is the standard deviation of the population and n is the size of the sample.

How large a sample must she take if she wants the margin of error to be under 0.5 inch?

She needs a sample of at least n, in which is found when M = 0.5, \sigma = 2.1

M = z*\frac{\sigma}{\sqrt{n}}

0.5 = 1.645*\frac{2.1}{\sqrt{n}}

0.5\sqrt{n} = 2.1*1.645

\sqrt{n} = \frac{2.1*1.645}{0.5}

(\sqrt{n})^{2} = (\frac{2.1*1.645}{0.5})^{2}

n = 47.73

Rounding up

The sample must be of at least 48 pizzas.

3 0
3 years ago
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Answer:

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Step-by-step explanation:

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to find the 25% you would do 72 divided by 4 which= 18

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