What is the distance between the points ( − 4 , 5 ) and ( 8 , 9 ) ?

Mathematics

1 answer:

anygoal [31]3 years ago

7 0

Answer:

Sqrt of 160

Step-by-step explanation:

The distance, try to think it as a triangle, so you will find out that the distance equals the sqrt of(8-(-4))^2 + (9-5)^2, so it will be sqrt of(144+16) which is sqrt of 160, so the answer will be sqrt of 160

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Step-by-step explanation:

we know that

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An Arithmetic series has 20 terms. The first term is -81. The sum of all the terms is -480. Use the arithmetic sum formula to fi

timama [110]

Answer:

The last term is 33.

Step-by-step explanation:

Sn = (n/2)(a1 + L) where a1 = first term and L = the last.

So:

-480 = (20/2) ( -81 + L)

-480 = 10( L - 81)