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2 years ago

15

There are 20 students on the school's student council. A special homecoming dance committee is to be formed by randomly selectin

g 6 students from student council. How many possible committees can be formed?

1 answer:

Nataly_w [17]2 years ago

8 0

There can be 3 committees

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Need help will mark brainliest

cestrela7 [59]

Answer:

I am grade 5 and I don't know about what it is at all. but please make me as the brainliest

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3 years ago

If r and s are positive integers, is \small \frac{r}{s} an integer? (1) Every factor of s is also a factor of r. (2) Every prime

Yuri [45]

Answer:

<em>If statement(1) holds true, it is correct that </em> $\small \frac{r}{s}$ <em> is an integer.</em>

<em>If statement(2) holds true, it is not necessarily correct that </em> $\small \frac{r}{s}$ <em> is an integer.</em>

<em></em>

Step-by-step explanation:

Given two positive integers $r$ and $s$ .

To check whether $\small \frac{r}{s}$ is an integer:

Condition (1):

Every factor of $s$ is also a factor of $r$ .

$r \geq s$

Let us consider an example:

$s = 5^2 \cdot 2\\r = 5^3 \cdot 2^2$

$\dfrac{r}{s} = \dfrac{5^3\cdot2^2}{5^2\cdot2} = 10$

which is an integer.

Actually, in this situation $s$ is a factor of $r$ .

Condition 2:

Every prime factor of <em>s</em> is also a prime factor of <em>r</em>.

(But the powers of prime factors need not be equal as we are not given the conditions related to powers of prime factors.)

Let

$r = 2^2\cdot 5\\s =2^4\cdot 5$

$\dfrac{r}{s} = \dfrac{2^3\cdot5}{2^4\cdot5} = \dfrac{1}{2}$

which is not an integer.

So, the answer is:

<em>If statement(1) holds true, it is correct that </em> $\small \frac{r}{s}$ <em> is an integer.</em>

<em>If statement(2) holds true, it is not necessarily correct that </em> $\small \frac{r}{s}$ <em> is an integer.</em>

<em></em>

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3 years ago

A daycare center Charges three dollars per hour for preschool children and $4 per hour for infants and toddlers. This equation r

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Answer:

Provide the graphs by editing the question and then I will edit the answer. But the equation answer is $\frac{-4}{3} y + 60$ .

Step-by-step explanation:

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3 years ago

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s). Line m has no y

goblinko [34]

If the line does not have a y int, then it means it does not cross the y axis....that means it is a vertical line.....its x int is (3,0)...so this equation for the line is x = 3

if the line does not have an x int, it means it does not cross the x axis...that means it is a horizontal line...its y int is (0,-4)...so the equation for this line is
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2 years ago

Read 2 more answers

I need help finding the area of the fish tank?

diamong [38]

Answer:

A. 83

Step-by-step explanation:

I hope this helps :)

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2 years ago