3 years ago

Describe how you could use your height and a yardstick to determine the unknown height of a flagpole.

1 answer:

7 0

You measure your height and the height of your shadow the you measure the height of the poles shadow and you then have the equation
y(your height)/s(your shadows height)=x(flagpoles height)/z(flagpoles shadow)
then to find the answer you just multiply the z by y/s

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igor_vitrenko [27]

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3 years ago

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Examine the system of equations. y = –3x – 2, y = 7 The value of x is . The solution to this system of equations is .

joja [24]

Hello!

You can substitute y into the other equation

7 = -3x - 2

Add 2 to both sides

9 = -3x

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Hope this helps!

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4 years ago

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What is the x-intercept of the graph of 5x + 2y = 20?

ozzi

<u>Answer</u>:

x-intercept = 4

<u>Explanation</u>:

when x-intercept, y shall be 0; when y-intercept, x shall be 0

5x + 2y = 20

[ consider y as 0 ]

5x + 2(0) = 20