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lisabon 2012 [21]
3 years ago
9

Make d the subject of the formula h=d/3+2​

Mathematics
2 answers:
Flura [38]3 years ago
7 0

Answer:

3h - 6

Step-by-step explanation:

To understand better,I have attached a picture to this answer

Ainat [17]3 years ago
5 0

H = d/3 + 2

Subtract 2 from both sides:

H-2 = d/3

Multiply both sides by 3:

D = 3(h-2)

Simplify to: d = 3h-6

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The sides of a triangle are x , x +1 , 2 x -1 and its area is x root of 10 .Find the value of x.
VARVARA [1.3K]


Ok, I'm going to start off saying there is probably an easier way of doing this that's right in front of my face, but I can't see it so I'm going to use Heron's formula, which is A=√[s(s-a)(s-b)(s-c)] where A is the area, s is the semiperimeter (half of the perimeter), and a, b, and c are the side lengths.

Substitute the known values into the formula:

x√10=√{[(x+x+1+2x-1)/2][({x+x+1+2x-1}/2)-x][({x+x+1+2x-1}/2)-(x+1)][({x+x+1+2x-1}/2)-(2x-1)]}

Simplify:

<span>x√10=√{[4x/2][(4x/2)-x][(4x/2)-(x+1)][(4x/2)-(2x-1)]}</span>

<span>x√10=√[2x(2x-x)(2x-x-1)(2x-2x+1)]</span>

<span>x√10=√[2x(x)(x-1)(1)]</span>

<span>x√10=√[2x²(x-1)]</span>

<span>x√10=√(2x³-2x²)</span>

<span>10x²=2x³-2x²</span>

<span>2x³-12x²=0</span>

<span>2x²(x-6)=0</span>

<span>2x²=0 or x-6=0</span>

<span>x=0 or x=6</span>

<span>Therefore, x=6 (you can't have a length of 0).</span>

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Answer:

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Step-by-step explanation:

145 bags of beef flavored dog food

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Anarel [89]
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Answer:

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Step-by-step explanation:

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