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ki77a [65]
3 years ago
12

in kick boxing, it is found that the force needed to break a board varies inversely with the length of the board. If it takes 5

lbs. of pressure to break a board 2 feet long, how many pounds of pressure will it take to break a board that is 8 feet long
Mathematics
2 answers:
I am Lyosha [343]3 years ago
6 0
20 hope that helps you
Oksana_A [137]3 years ago
5 0

Answer:

20

Step-by-step explanation:

Since we know that it takes 5lbs. to break a 2-foot longboard, we first want to figure out how many pounds it takes to break a 1foot board.

5/2=2.5

It takes 2.5 lbs to break a 1-foot board.

2.5x8=20

It would take 20lbs to break an 8-foot longboard.

Hope this helps :)

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Given the system of linear equations. x=y+3 y=-4x-3 Part A: Solve the linear system of equations by graphing Part B: Use substit
Radda [10]

Answer:

see below

Step-by-step explanation:

x=y+3

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y = x-3

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We have both equations in slope intercept form

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graph is below

They both have the same y intercept so they intersect at (0,-3)

Substitution

x=y+3

y=-4x-3

Substitute the second equation into the first equation

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x = -4x-3 +3

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Add 4x to each side

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y = 0-3

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Additon

x=y+3

Subtract y from each side

x-y = 3

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Add 4x to each side

4x+y =-3

Add the equations together to eliminate y

x-y = 3

4x+y =-3

-----------------

5x +0y =0

5x = 0

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3 0
3 years ago
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bonufazy [111]
So
Total cost of the workbooks is d
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Answer:

It is B or number three

Step-by-step explanation:

4 0
3 years ago
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Answer: 6/4x

Then  John ended up with  v/4  magnets  and  gave away  (3/4)x

Liam   gave  away  2 ( 3/4)x = 6/4x  magnets  and  was  left  with  x/4  magnets

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Step-by-step explanation:

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