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3 years ago

The question, “How many ways can 4 students be chosen from a class of 30 students?”, is a(n) _____.

Mathematics

2 answers:

Ahat [919]3 years ago

7 0

The answer to your question is A

OLga [1]3 years ago

5 0

Answer: Option 'A' is correct.

Step-by-step explanation:

Since we have given that

Total students in a class = 30

Number of students is to be chosen = 4

So, we will use Combination :

As Combination is the collection of the object irrespective of any arrangement.

So, Number of ways to choose 4 students among the 30 students is given by

$^{30}C_4\\\\=27405$

Hence, Combination is the required answer.

Therefore, Option 'A' is correct.

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If the lateral area of a right rectangular prism is 384 cm^2, its length twice its width, and its height is twice its length, fi

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3 years ago

Solve: 2x > 18 x < 9 x > 9 x > 36 x < 36

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Answer:

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2 years ago

PLZZZZZZZ HELPPPP

dolphi86 [110]

Answer:

The correct option is 1.

Step-by-step explanation:

It is given than the area of the triangle ABC is 46cm².

Area of a triangle is

$A=\frac{1}{2}\times base\times height$

Base of the triangle is AB and height of the triangle is CD.

$A=\frac{1}{2}\times AB\times CD$

$A=\frac{1}{2}\times AB\times 8$

$A=4\times AB$

The area of the triangle is 46cm².

$46=4\times AB$

$AB=\frac{46}{4}$

$AB=11.5$

Therefore the length of side AB is 11.5 cm. Option 1 is correct.

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3 years ago