3 years ago

PLZZZZZZZZZZZZZZZ HELP ME FAST

1 answer:

8 0

So it's actually 0.36363636... with the 36 repeating, right?

Here's a technique for converting repeating decimals to fractions: 

N = 0.3636363636... 
100N = 36.36363636... 

This means 100N - N = (36.363636...) - (0.36363636...). This simplifies to 99N = 36, because the "0.36363636..." parts of both numbers on the right cancel each other out. 

Solving this for N gives 
N = 36/99, or 4/11 

If you take a calculator (or use long division) and divide 4 by 11, you'll see that it's 0.36363636...

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What is the perimeter of the polygon defined by the points A(12, 20), B(20, 20), C(20, 8), and D(12, 8)? a 64 units b 144 units

Rzqust [24]

Answer:

d. 40 units

Step-by-step explanation:

The length of the horizontal side of this rectangle on the line y=20 is the difference of the x-coordinates, 12 and 20, so is 8. The length of the vertical side on the line x=20 is the difference of the y-coordinates, 20 and 8, so is 12.

Two sides are of length 8 and two are of length 12. The perimeter is the sum of the side lengths, so is ...

P = 2·8 +2·12 = 40 . . . units