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3 years ago

7

How many different lines pass through a 3x3-point grid if a line only needs two points?

2 answers:

lions [1.4K]3 years ago

7 0

Answer:

How many different lines pass through a 3x3-point grid if a line only needs two points?

Step-by-step explanation:

The answer being (93)=9! 3! 6! =9⋅8⋅73⋅2⋅1=84 possible arrangements.

irinina [24]3 years ago

7 0

Answer:

Well, there are 9 points. If you choose 2 of them, that gives a straight line. So you can try to find all the ways you can choose two points.

But you over-count, because some lines go through three points. So the question is 1: How many lines go through 3 points? And 2: How many times have you 'over-counted' these lines?

Step-by-step explanation:

You might be interested in

Factor −6 out of −18a−30

fgiga [73]

Remark

This is like using the distributive principle only you are going backwards. Instead of trying to remove brackets, you are trying to create them.

Solution

Since you want to take - 6 outside the brackets you should divide both terms by - 6

<em><u>- 18a</u></em>: - 18a/- 6 = 3a which is left inside the brackets.

<em><u>-30:</u></em> - 30/-6 = 5

- 6(3a + 5)

Answer

-6(3a + 5)

6 0

4 years ago

Read 2 more answers

Hello! I’m really struggling with this, any help is appreciated (:

iragen [17]

Hi, It's the 3rd option

Thanks, It was little hard to find the answer. I am not totally sure about it but as far as I understand this question. the third option is correct.

:)

5 0

3 years ago

Gayle is making gift bags and must tie 250 ribbons to them. If Gayle can tie 4 ribbons every 10 minutes, how long will it take G

mart [117]

Answer:

625 minutes

Step-by-step explanation:

Given that:

Time taken to tie 4 ribbons = 10 minutes

Number of ribbons to be tied = 250

To find:

Time taken to tie 250 ribbons.

Solution:

First of all, we need to find the time taken to tie one ribbon.

And then we can multiply it with 250 to find the time taken to tie all the 250 ribbons.

For finding the time to tie one ribbon, we need to divide the time taken to tie 4 ribbons with 4.

Time taken to tie 1 ribbon = $\frac{10}{4} = 2.5$ minutes

Time taken to tie 250 ribbons = 2.5 $\times$ 250 = <em>625 minutes</em>

4 0

3 years ago

The expression for the income of an amusement park is given, where x is the entry price: 96. - 4c? Aside from free entry, what e

Svet_ta [14]

The income of the amusement park is a function of the price of the ticket

The entry price that will result in no income is $24

<h3>How to determine the entry price that results in no income</h3>

The expression for the income is given as:

$96x - 4x^2$

When the income is 0, we have the following equation

$96x - 4x^2 = 0$

Factor out 4x

$4x(24 - x) = 0$

Split the equation

4x = 0 or 24 - x = 0

Solve for x

x = 0 or x = 24

This means that, the entry price that will result in no income is $24

Read more about income and expenses at:

brainly.com/question/13628349

6 0

2 years ago

The set of ordered pairs shown represents a function, f,

Rus_ich [418]

Answer:

B) (4, 0)

C) (0, -1)

E) (2, 3)

Step-by-step explanation:

If we see the rule of function then it says that,

a function is a special relationship where each input, x, has a single output, y.

It means that for every value of x there SHOULD be a different value of y.

A)

(-3,-2) Rejected

because when x = 3, y = -2

D)

(1, 6) Rejected

because when x = 0, y = 6

F)

(-5, 9) Rejected

because when x = 4, y = 9

4 0

4 years ago

Read 2 more answers