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Alexxandr [17]
3 years ago
7

Give an example in which you need to find the perimeter of a real-life object.

Mathematics
1 answer:
erik [133]3 years ago
7 0

Answer:

you are building a fence for your dog and it needs to be a square. One side is 20 ft long. What is the perimeter of the fenced area?

Step-by-step explanation:

The answer would be 80 ft long since it is a square and all sides are equal so you would just add 20 ft 4 times. hope this helped :)

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I think it's x^3+2x^2-4
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Use f(x) = 1 - 4x + 1). Find f(-5)
steposvetlana [31]
F(-5)=(1 - 4(-5) +1 )
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What is the width of 4 1/4
astra-53 [7]
6 2/3 x 3 1/2 = 23 1/3
so to find the second table you would use the expression

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3 years ago
Solve for n.<br> 2n^2 = 10n +48
LekaFEV [45]

Answer:

n = -3 or 8

Step-by-step explanation:

2n² = 10n +48 (rearrange)

2n²- 10n - 48 = 0  (divide all terms by 2)

n²- 5n - 24 = 0

by factorization,

(n+3)(n-8) = 0

hence,

n+3 = 0 ----> n = -3

or

n-8 = 0 ----> n = 8

7 0
3 years ago
Abigail was skateboarding home when the wheel axle of her skateboard broke. She had already traveled two thirds of the way home
max2010maxim [7]

Answer:

Abigail was four times faster in the skateboard than when she is walking

Step-by-step explanation:

Let the total distance to travel be d

distance traveled on skateboard = 2/3 * d = 2d/3

distance walked = 1/3 * d = d/3

So let the time taken to skate be t, then time taken to walk home will be 2t since it is 2 times longer.

Now, the speed on both trips is distance/time

For the snowboard trip, speed is 2d/3/t = 2d/3t

For the walking trip, distance would be;

d/3/2t = d/6t

So let’s compare these two speeds.

Obviously the speed on the skateboard is greater than that walking.

So we can equally divide the speed on the skateboard by that while walking to know how many times faster it is.

Thus, mathematically we have

2d/3t divided by d/6t

So that would be;

2d/3t * 6t/d = 4

So this means she was four times faster on the skateboard

3 0
3 years ago
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