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2 years ago

ABDC is a kite . AB =AC and DB=DC , Angle A = 80 degree and angle D=62 degree . find angles B and C

Mathematics

1 answer:

kotegsom [21]2 years ago

4 0

Step-by-step explanation:

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The management of a large airline wants to estimate the average time after takeoff taken before the crew begins serving snacks a

Dahasolnce [82]

Answer:

The answer is "Option a, Option b, and Option d".

Step-by-step explanation:

In the given question it is used to stratifying the sampling if the population of this scenario it flights takes off when it is divided via some strata.

In option a, In this case, it stratified the sampling, as the population of planes taking off has been divided into the days of the week.
In option b, It also used as the case of stratified sampling.
In options c, it is systematic sampling, that's why it is wrong.
In option d, It is an example of stratifying the sampling.

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2 years ago

In the given right triangle, AX is the altitude. If CX-9 and AX - 9, what is the length of BC? "Note: Figure not drawn to scale"

kenny6666 [7]

Answer:

Step-by-step explanation:

I’m pretty sure the answer is C

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2 years ago

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In a set of 25 aluminum castings, four castings are defective (D), and the remaining twenty-one are good (G). A quality control

lianna [129]

Answer:

The sample space for selecting the group to test contains 2,300 elementary events.

Step-by-step explanation:

There are a total of N = 25 aluminum castings.

Of these 25 aluminum castings, n₁ = 4 castings are defective (D) and n₂ = 21 are good (G).

It is provided that a quality control inspector randomly selects three of the twenty-five castings without replacement to test.

In mathematics, the procedure to select k items from n distinct items, without replacement, is known as combinations.

The formula to compute the combinations of k items from n is given by the formula:

${n\choose k}=\frac{n!}{k!(n-k)!}$

Compute the number of samples that are possible as follows:

${25\choose 3}=\frac{25!}{3!\times (25-3)!}$

$=\frac{25\times 24\times 23\times 22!}{3!\times 22!}\\\\=\frac{25\times 24\times 23}{3\times 2\times 1}\\\\=2300$

The sample space for selecting the group to test contains 2,300 elementary events.

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3 years ago

What is slope intercept form

Nat2105 [25]

Slope intercept form is y=mx+b

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2 years ago

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Help help help help

Crank

Answer:

C = 18

Step-by-step explanation:

Put the numbers in place of their symbols and do the arithmetic. The diagram is showing you r = 3.

C = 2πr

C = 2(3)(3) . . . . . using 3 for π, as directed

C = 18

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2 years ago

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ABDC is a kite . AB =AC and DB=DC , Angle A = 80 degree and angle D=62 degree . find angles B and C​

ABDC is a kite . AB =AC and DB=DC , Angle A = 80 degree and angle D=62 degree . find angles B and C