3 years ago

Find the distance d (P1,P2) between the given points P1 and P2 P1= (5,4) P2=(-4,5)

Mathematics

1 answer:

oee [108]3 years ago

5 0

Answer:

$\sqrt{82 }$

Step-by-step explanation:

d = $\sqrt{(x_{1} - x_2)^2+(y_1-y_2)^2 }$

d = $\sqrt{(5 - (-4))^2+(4-5)^2 }$

d = $\sqrt{(9)^2+(-1)^2 }$

d = $\sqrt{81+1 }$ = $\sqrt{82 }$

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2 years ago

The difference of two numbers.(a,b) is 21. The difference of 5 times a and 2 times b is 18. What are the values of a,b?

ziro4ka [17]

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3 years ago

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Step-by-step explanation:

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2 years ago

Read 2 more answers

A square dance floor has a perimeter of 120 yards. What is the length of a diagonal of the dance floor?

Crazy boy [7]

Answer:

Hey!

Your answer is C.42.4yd

Step-by-step explanation:

There are 2 ways you can work this on out...

1. Using Pythagoras Theorem...

= 30^2 + 30^2 = 1,800 (30^2=900 so you've added 2 of those to make 1,800)

= SQUARE ROOT THE ANSWER OF 1,800

$\sqrt{x} 1,800$ = 42.42640687119285‬

TO GET A MORE PRECISE ANSWER WE ROUND IT UP TO 1 decimal place

= 42.4 yd is the diagonal length of the dance floor!!

HOPE THIS HELPS!!

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IgorLugansk [536]

Answer:

Step-by-step explanation:

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+3x +3x

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-19 -19

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Divided by 3

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3 years ago