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iris [78.8K]
3 years ago
7

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

Mathematics
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:

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What is the area of a rectangle whose width is 6y units and whose length is 4y+2x-6 units?
ValentinkaMS [17]

Answer:

66473737

Step-by-step explanation:

747292929277273664646272727282891919919191919919192929298475756565665

6 0
2 years ago
Beckett purchased a diamond ring for $14,000. The value of the ring increases 2.1% every year
steposvetlana [31]

Answer:

14,000+2.1%(0.021)x

Step-by-step explanation:

x is how many years

8 0
3 years ago
What is the inverse of the function f(x)= 6x-5/x+9
Goshia [24]

Answer:

Inverse of -5-9x/x-6

Step-by-step explanation:

Steps:

1: Interchange the variables x and y.      

x=6y-5/y+9

2: Solve x = 6y-5/y+9 for y

3: Multiply both sides by y+9

4: Simplify and Expand

5: Subtract 9x from both sides.

6: Simplify and Subtract y from both sides then Simplify again

7: Divide both sides by x-6

Answer: Inverse of -5-9x/x-6

<em><u>Hope this helps.</u></em>

6 0
2 years ago
Read 2 more answers
Alicia reads for 2 hours on Monday she reads for 56 minutes on Tuesday how many total minutes does she read on the two days
NeX [460]

Answer: 176 mins

Since 2 hours is 120 mins and 1 hour is 60 min. You have to add 56 and 120 which is 176 mins easy done.


7 0
2 years ago
Someone explain how to do this please!! dont need just an answer but explain as well
Leya [2.2K]

6.5 goes in the first box and 5.5 goes in the second box.

Explanation for first box: 13+2 is 15 and half of 15 is 7.5 so you need to take 13 and subtract 7.5. Once you do that, you end up with 6.5

Explanation for second box: (The negative 7 doesn't matter because you want the absolute value) 18+7 is 25 and half of 25 is 12.5. 18-12.5 is 5.5 so the answer would be 5.5

8 0
2 years ago
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