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Vsevolod [243]
3 years ago
15

During a cold winter, the temperature stayed below zero for 10 days (ranging from −20 to −5). The variance of the temperatures o

f the 10 day period _____. a. must be at least zero b. is negative since all the numbers are negative c. Cannot be computed since all the numbers are negative. d. Can be either negative or positive.
Mathematics
1 answer:
Serjik [45]3 years ago
5 0

Answer:

The variance of the temperatures of the 10 day period must be at least zero.

Step-by-step explanation:

The variance is the expectation of the squared deviation of a random variable from its mean. It measures how far a set of numbers are spread out from their average value.

Its unit of measure corresponding to the square of the unit of measure of the variable. In this case, the variance of the temperatures is expressed in (°C)². The variance has a minimum value of 0.

Since the variance is squared, it will always have values greater than zero.

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Answer:

I believe the answer would be A

Step-by-step explanation:

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Illusion [34]

Answer:

Option d. PQ = YZ

Step-by-step explanation:

<u><em>The question in English is</em></u>

Choose the most appropriate answer. The PQR triangle and the XYZ triangle are two congruent triangles. The angle P = the angle Y and PR = YX. Side pairs of the same length are ... a. PQ = XZ b. QR = YZ c. QR = XY d. PQ = YZ

we know that

If two triangles are congruent, then its corresponding sides and its corresponding angles are congruent

Corresponding sides are named using pairs of letters in the same position on either side of the congruence statement

so

we have that

m\angle P=m\angle Y

PR=YX

so

Triangle PQR is congruent with Triangle YZX

That means

<em><u>Corresponding angles</u></em>

m\angle P=m\angle Y

m\angle Q=m\angle Z

m\angle R=m\angle X

<u><em>Corresponding sides</em></u>

PQ=YZ\\QR=ZX\\PR=YX

8 0
3 years ago
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viva [34]

Answer:

The height on the plans is 6.5 inches

Step-by-step explanation:

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8 0
2 years ago
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STatiana [176]

Answer:

The net worth does not change.

Step-by-step explanation:

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2 years ago
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gayaneshka [121]

Answer:

Step-by-step explanation:

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     = x^{9}

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7 0
3 years ago
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