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evablogger [386]
3 years ago
15

Can someone please help? its urgent!!! y=2x+1 for x = -2 , -1 , 0 , 1 , and 2

Mathematics
1 answer:
leonid [27]3 years ago
8 0

Answer:

hello :

y = –2x – 1....(1)

y = 3x–1.....(2)

by (1) and (2) :  3x-1 = -2x-1

5x =0

x =0 ....(the x-coordinates of the solutions)

Step-by-step explanation:

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Find the value of x and the length of both chords if BW=2x+10, WD=4, CW=7x+5, and WE=2.
daser333 [38]

Answer:

The value of x is 5

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Step-by-step explanation:

In a circle if two chords intersected at a point inside it there are four segments created, two in each cord, the products of the lengths of the line segments on each chord are equal

∵ BD and CE are two chords in a circle intersected at W

∴ The two segments of chord BD are BW and WD

∴ The two segments of chord CE are CW and WE

- By using the rule above

∴ BW × WD = CW × WE

∵ BW = 2x + 10 and WD = 4

∵ CW = 7x + 5 and WE = 2

- Substitute them in the rule above

∴ (2x + 10) × 4 = (7x + 5) × 2

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- Subtract 40 from both sides

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- Divide both sides by - 6

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- Substitute the value of x to find its length

∴ Chord CE = 7(5) + 7 = 35 + 7

∴ Chord CE = 42 units

5 0
3 years ago
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