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4 years ago

10

PLEASE HELP GEOMETRY URGENT!!

1 answer:

ohaa [14]4 years ago

7 0

II AND III contradict each other, because a median bisects one of the polygons sides, and if the line segment is a side, then it is impossible for it to also bisect that side.

However, if the triangle is equilateral or isosceles, the altitude and the median can be the same line segment.

If the triangle is right, the line segment could be both a side and an altitude.

Hope I could help!

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3 years ago

Part of the proceeds from a garage sale was $470 worth of $10 and $20 bills. If there were 14 more $10 bills than $20 bills, fin

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There are 25 $10 bills and 11 $20 bills.

Step-by-step explanation:

Given,

Worth of proceeds from garage = $470

Let,

x be the number of $10 bills

y be the number of $20 bills.

According to given situation;

10x+20y=470 Eqn 1

x = y+14 Eqn 2

Putting value of x from Eqn 2 in Eqn 1

$10(y+14)+20y=470\\10y+140+20y=470\\30y=470-140\\30y=330$

Dividing both sides by 30

$\frac{30y}{30}=\frac{330}{30}\\y=11$

Putting y=11 in Eqn 2

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There are 25 $10 bills and 11 $20 bills.

Keywords: linear equation, substitution method

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3 years ago

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