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tatuchka [14]
3 years ago
15

A triangle has side lengths of (x-6), (x+2) and (x-9). Find the perimeter of the triangle

Mathematics
1 answer:
Setler [38]3 years ago
8 0

Answer:

3x - 13

Step-by-step explanation:

The perimeter is just the distance around the triangle. We have all three sides, so we can just add them together to get the total distance.

(x-6) + (x+2) + (x-9)

Group:

x + x + x - 6 + 2 - 9

3x - 13

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Sixty-three less than 15 times a number is 72. what is the number?
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Answer:

-3/5

Step-by-step explanation:

First represent this with numbers. Less means subtraction -, times means multiplication *, is means equals =.

And let's represent "a number" with x.

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Mike has 78 feet of fencing available for his garden, this is the perimeter (P) of the rectangle:
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The formula of Perimeter is:
P=2(W+L), where W is the width and L is the length, then:

P=78→2(W+L)=78
Dividing both sides of the equation by 2:
2(W+L)/2=78/2
W+L=39

If the shape is of a golden rectangle, we know:
L=1.6W
Replacing this above:
W+1.6W=39
Adding similar terms:
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Solving for W
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Answer: T<span>he dimensions of the garden are: Width=15 feet and Length=24 feet. </span>
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3 years ago
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