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Ratling [72]
3 years ago
6

19. What is the distance between P(-3, 10 ) and Q( 12, -6 )? Round to the nearest hundredth

Mathematics
1 answer:
OLga [1]3 years ago
4 0

Answer:

To calculate the distance between two points, we can use a formula that is a variation Pythagorean Theorem. Look:

"d" represents the distance and coordinates are expressed as follows: (x, y)

Let's go to the calculations.

The answer is 12,6 u.c.

Step-by-step explanation:

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In a pile of 55 coins made of nickels and dimes totaling $3.90 how many of each coin are there
tigry1 [53]
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d = number of dimes in the pile

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\bf \begin{cases}
n+d=55\implies \boxed{n}=55-d\\
5n+10d=390\\
-------------\\
5\left(\boxed{55-d}  \right)+10d=390
\end{cases}
\\\\\\
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