2 years ago

4) True or False? Our town is growing with a doubling time of 40 years, so its

Mathematics

1 answer:

mart [117]2 years ago

6 0

Answer:
False

Explain:

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Name an event that would be measured in days

telo118 [61]

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3 years ago

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1) 5x-2y=4. 2) 3x-5y=13 x-2y=5<br>3x+y=9

Natali [406]

$\left\{\begin{array}{ccc}5x-2y=4\\3x+y=9&/\cdot2\end{array}\right\\+\left\{\begin{array}{ccc}5x-2y=4\\6x+2y=18\end{array}\right\\----------\\.\ \ \ \ \ 11x=22\ \ \ \ /:11\\.\ \ \ \ \ \ \ x=2\\\\3\cdot2+y=9\\6+y=9\\y=9-6\\y=3\\\\Answer:x=2;\ y=3$

$\left\{\begin{array}{ccc}3x-5y=13\\x-2y=5\end{array}\right\\\left\{\begin{array}{ccc}3x-5y=13\\x=2y+5\end{array}\right\\\\substitute:\\\\3(2y+5)-5y=13\\6y+15-5y=13\\y=13-15\\y=-2\\\\x=2\cdot(-2)+5=-4+5=1\\\\Answer:x=1;\ y=-2.$

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2 years ago

What is the difference between the temperature - 7 Celsius and - 12 Celsius on a scatter diagram

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3 years ago

A board game that normally sells for $34.95 is on sale at an 18% discount. What is the sale price of the board game?

fomenos

34.95 x 18%= 6.29

34.95-6.29= 28.66

$28.66 is the sale price

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