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STALIN [3.7K]
3 years ago
5

The figure shows a right triangle. Find the length of the shortest side of the triangle.

Mathematics
2 answers:
Norma-Jean [14]3 years ago
6 0

Answer:

x= 18cm

Step-by-step explanation:

Applying pythagoras' rule

(x)²+(x+6)²=(x+12)²

Open the brackets

x²+x²+12x+36=x²+24x+144

Collect like terms to the LHS

x²+x²-x²+12x-24x+36-144=0

x²-12x-108=0

Solving the quadratic equation

a=1,b= - 24,c= - 108,ac= - 108

Factors are - 18 & +6

x²-18x+6x-108=0

(x²-18x)+(6x-108)=0

x(x-18)+6(x-18)=0

(x-18)(x+6)=0

x-18=0 or x+6=0

x=0+18 or x=0-6

x=18 or x= - 6

In cases like this it's the positive answers that are chosen

Therefore, x=18cm

Nata [24]3 years ago
3 0
I don’t see a image tho ?
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Step-by-step explanation:

We are to get the expression for the following statements;

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The product of nine and a number x is expressed as;

=9 \times x\\= 9x

The quotient of that number and 5.

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The difference between both expression;

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Hence, the difference of nine times a number x and the quotient of that number and 5 is expressed as 9x - \frac{x}{5}

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\frac{n}{12}

Eight more than the resulting function is;

\frac{n}{12}+8

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3) The product of a number and the quantity 'six minus the number' plus the quotient of eight and the number.

Let the number be x:

six minus the number is expressed as;

6-x

product of a number x and the quantity 'six minus the number is;

x(6-x)

quotient of eight and the number is;

\frac{8}{x}

Taking the resulting sum of the last two expression

x(6-x) + 8x

Hence the product of a number and the quantity 'six minus the number' plus the quotient of eight and the number is expressed as;

x(6-x) + 8x

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Let the first even number be 2x

The consecutive even numbers are gotten by adding 2 to the preceding number. The two consecutive even integers are 2x+2 and 2x+2+2

the sum of three consecutive even integers is expressed as;

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4 0
3 years ago
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Step-by-step explanation:

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Alina [70]

Answer:

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Step-by-step explanation:

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3 years ago
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