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elixir [45]
2 years ago
6

5. A number is squared, then multiplied by 6. The result is 54. What was the number? Answer:

Mathematics
1 answer:
madam [21]2 years ago
8 0

Answer:

± 3

Step-by-step explanation:

let n be the number then the number squared is n² , so

6n² = 54 ( divide both sides by 6 )

n² = 9 ( take the square root of both sides )

n = ± \sqrt{9} = ± 3

That is the number is 3 or - 3

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Area of a triangle is given by the formula A=1/2 bh. The area of the triangle shown to the right is 56 sq. units. Find its base
Westkost [7]
Given

base=2x+6
height=x+4

and
area=56 square units

56=1/2 times (2x+6) times (x+4)
times bot sides by 2
112=(2x+6)(x+4)
expand
112=2x²+14x+24
divide both sides by 2
56=x²+7x+12
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factor
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11 and -4
0=(x-4)(x+11)
set to 0

x-4=0
x=4

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x=4


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height=4+4=8


base=2x+6
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8 0
3 years ago
10x^3 y^-5 z^-2 if x=3 y=2 and z=5 express your answer as a reduced fraction
sineoko [7]

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3 years ago
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