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  • 12-02-2021
  • Mathematics
contestada

Please answer
( will give brainlst)

Please answer will give brainlst class=

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ArrowSpace
ArrowSpace ArrowSpace
  • 15-02-2021

8. x = 0, y = 14

[tex]8x+14= 4x+14[/tex]

subtract 14 from both sides

[tex]8x=4x[/tex]

The only way this can be true is if x is zero

Now to find y, use substitution:

[tex]y=8(0)+14\\y=0+14\\y=14[/tex]

9.

Sprinter:

100 yards = 10 seconds

divide by 10 on both sides

10 yards = 1 second

Long-distance runner:

1 mile = 1760 yards

4 minutes = 240 seconds

1760 yards = 240 seconds

divide by 240 on both sides

1 yard = 7 1/3 seconds

Comparing:

[tex]7\frac{1}{3} -1=6\frac{1}{3}[/tex]

6 1/3 yards per second faster

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