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Mnenie [13.5K]
3 years ago
13

Help me out with this problem please!!and (please tell me how you got the answer.)

Mathematics
1 answer:
Sati [7]3 years ago
5 0
The answers are that the number can equal -4 or 1. 

You can find this by setting the number equal to x.

x^2 (The square of a number) + 3x (three times a number) = 4

x^2 + 3x = 4 ---> subtract 4 from each side
x^2 + 3x - 4 = 0

Then you can factor this to find the answers

(x - 4)(x + 1) = 0

Set both equal to 0 and solve. 
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The new number, 550, is 200 more than the original number. What is the approximate percent change?
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Answer:

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The world speed record on water was set on October 8, 1978 by Ken Warby of Blowering Dam, Australia. If Ken drove his motorboat a distance of 1000 m in 7.045 s,

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i think this is it

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