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ale4655 [162]
3 years ago
13

2x + 3y = -17 is one equation in a coincidental system of two linear equations. The other equation is _ y = _ x – 102.

Mathematics
1 answer:
Alex17521 [72]3 years ago
4 0
Rewrite the first equation: 3y=-2x-17. The equations are coincidental and -17 is one sixth of -102 so the other coefficients need to be multiplied by 6: 18y=-12x-102.
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Pythagorean thoerem
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a²+b²=c²

so
given that one of the legs is 9ft (9 ft is the height of the triangle)
and the hypotnuse is 12 ft (length of ladder)
then say the last leg is x

so
x²+9²=12²
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x²=63
sqrt both sides
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Answer:

The first four terms of the above sequence are 1, 6, 11, 16.

Step-by-step explanation:

A sequence is defined by the function f(n)=f(n-1)+5.

Where n represents the number of the term for n>1

First Put n = 2

f(2)=f(2-1)+5.

    = f (1) + 5

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Second Put n = 3

f(3)=f(3-1)+5.

    = f (2) + 5

    = 1 + 5

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Third Put n = 4

f(4)=f(4-1)+5.

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Second Put n = 5

f(5)=f(5-1)+5.

    = f (4) + 5

    = 11 + 5

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Therefore the first four terms of the above sequence are 1, 6, 11, 16.

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<h2>Answer: C 375 cm²</h2>

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