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2 years ago

In this diagram, how many points are coplanar with points A, B and R?

Mathematics

2 answers:

Nimfa-mama [501]2 years ago

7 0

Answer:

2 point coplanar with point A,B and R

djyliett [7]2 years ago

5 0

Answer:

That's the answer

Step-by-step explanation:

AB + AC must equal BC. Draw the line and points to see why.

4x-3 + 5x - 16 = 7x + 5

9x - 19 = 7x + 5

2x = 24

x = 12

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How many different simple random sampmes of size 5 can be obtained from a pppulation whose size is 43?

Nesterboy [21]

Answer:

Number of random samples = 962598

Step-by-step explanation:

A random sample represents the responses for a certain survey of a part of the population.

A sample size is the part of the population being surveyed.

For a population $N$ the number of different random samples that can be chosen for a sample size $x$ can be calculated as = $NCx$

This can be calculated as :

$NCx=\frac{N!}{x!(N-x)!}$

Given:

Population size = 43

Sample size = 5

Number of random samples = $43C5$

⇒ $\frac{43!}{5!(43-5)!}$

⇒ $\frac{43!}{5!(38)!}$

⇒ $\frac{43\times42\times41\times40\times39}{5\times4\times3\times2\times1}$ [Canceling out the common terms]

⇒ $962598$ (Answer)

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Step-by-step explanation:

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