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Evgen [1.6K]
3 years ago
12

a model railroad kit contains curved tracks and straight tracks . Given that 35 % of the tracks are curved , what fraction of th

e tracks are straight ? write the fraction in simplest form
Mathematics
1 answer:
Pani-rosa [81]3 years ago
4 0
Since 35% of the tracks are curved, 65% of the tracks must be straight.

65% = 65/100 = 13/20
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azamat

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3 years ago
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2 years ago
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Pwease help me anyone. thanks :-) :-) :-) :-) :-) :-) :-) :-)!!!!
adell [148]
A)
x+3

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x(x+3)=340\\&#10;x^2+3x-340=0

c)
x(x+3)=340\\ x^2+3x-340=0\\&#10;\Delta=3^2-4\cdot1\cdot(-340)=9+1360=1369\\\sqrt{\Delta}=37\\&#10;x_1=\dfrac{-3-37}{2}=-20\\&#10;x_2=\dfrac{-3+37}{2}=17

It's 17.
3 0
3 years ago
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